{"item": {"cve_id": "CVE-2020-3153", "ghsa_id": "", "osv_id": "", "title": "Cisco AnyConnect Secure Mobility Client for Windows Uncontrolled Search Path Vulnerability", "description": "A vulnerability in the installer component of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated local attacker to copy user-supplied files to system level directories with system level privileges. The vulnerability is due to the incorrect handling of directory paths. An attacker could exploit this vulnerability by creating a malicious file and copying the file to a system directory. An exploit could allow the attacker to copy malicious files to arbitrary locations with system level privileges. This could include DLL pre-loading, DLL hijacking, and other related attacks. To exploit this vulnerability, the attacker needs valid credentials on the Windows system.", "published_at": "2020-02-19T20:15:15.113", "modified_at": "2026-08-12T05:17:29.713", "vendor": "Cisco", "product": "Anyconnect Secure Mobility Client", "affected_versions": ["unspecified"], "fixed_versions": [], "cvss_score": 6.5, "cvss_version": "3.1", "cvss_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N", "severity": "MEDIUM", "epss_score": 0.28307, "epss_percentile": 0.98077, "epss_date": "2026-10-07", "is_kev": true, "kev_date": "2022-10-24", "kev_due_date": "2022-11-14", "kev_action": "Apply updates per vendor instructions.", "cwe_ids": ["CWE-427"], "attack_vector": "LOCAL", "attack_complexity": "LOW", "privileges_required": "LOW", "user_interaction": "NONE", "references": ["http://packetstormsecurity.com/files/157340/Cisco-AnyConnect-Secure-Mobility-Client-4.8.01090-Privilege-Escalation.html", "http://packetstormsecurity.com/files/158219/Cisco-AnyConnect-Path-Traversal-Privilege-Escalation.html", "http://packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-Escalation.html", "http://seclists.org/fulldisclosure/2020/Apr/43", "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-win-path-traverse-qO4HWBsj", "http://packetstormsecurity.com/files/157340/Cisco-AnyConnect-Secure-Mobility-Client-4.8.01090-Privilege-Escalation.html", "http://packetstormsecurity.com/files/158219/Cisco-AnyConnect-Path-Traversal-Privilege-Escalation.html", "http://packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-Escalation.html", "http://seclists.org/fulldisclosure/2020/Apr/43", "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-win-path-traverse-qO4HWBsj", "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3153"], "source_urls": {"NVD": "https://nvd.nist.gov/vuln/detail/CVE-2020-3153", "CVE.org": "https://www.cve.org/CVERecord?id=CVE-2020-3153", "CISA": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3153", "FIRST EPSS": "https://api.first.org/data/v1/epss?cve=CVE-2020-3153"}, "patch_available": null, "workaround_available": null, "sources": ["NVD", "CVE.org", "CISA", "FIRST EPSS"], "reference_items": [{"url": "http://packetstormsecurity.com/files/157340/Cisco-AnyConnect-Secure-Mobility-Client-4.8.01090-Privilege-Escalation.html", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "source": "NVD", "name": ""}, {"url": "http://packetstormsecurity.com/files/158219/Cisco-AnyConnect-Path-Traversal-Privilege-Escalation.html", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "source": "NVD", "name": ""}, {"url": "http://packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-Escalation.html", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "source": "NVD", "name": ""}, {"url": "http://seclists.org/fulldisclosure/2020/Apr/43", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "source": "NVD", "name": ""}, {"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-win-path-traverse-qO4HWBsj", "tags": ["Vendor Advisory"], "source": "NVD", "name": ""}, {"url": "http://packetstormsecurity.com/files/157340/Cisco-AnyConnect-Secure-Mobility-Client-4.8.01090-Privilege-Escalation.html", "tags": ["Exploit", "Third Party Advisory", "VDB Entry", "x_refsource_MISC", "x_transferred"], "source": "NVD", "name": ""}, {"url": "http://packetstormsecurity.com/files/158219/Cisco-AnyConnect-Path-Traversal-Privilege-Escalation.html", "tags": ["Exploit", "Third Party Advisory", "VDB Entry", "x_refsource_MISC", "x_transferred"], "source": "NVD", "name": ""}, {"url": "http://packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-Escalation.html", "tags": ["Exploit", "Third Party Advisory", "VDB Entry", "x_refsource_MISC", "x_transferred"], "source": "NVD", "name": ""}, {"url": "http://seclists.org/fulldisclosure/2020/Apr/43", "tags": ["Exploit", "Mailing List", "Third Party Advisory", "mailing-list", "x_refsource_FULLDISC", "x_transferred"], "source": "NVD", "name": ""}, {"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-win-path-traverse-qO4HWBsj", "tags": ["Vendor Advisory", "vendor-advisory", "x_refsource_CISCO", "x_transferred"], "source": "NVD", "name": ""}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3153", "tags": ["US Government Resource", "government-resource"], "source": "NVD", "name": ""}], "cvss_v4_score": null, "cvss_v4_vector": "", "cvss_v4_severity": "", "nvd_status": "Analyzed", "cna": "cisco", "date_reserved": "2019-12-12T00:00:00.000Z", "ssvc": {"options": {"Exploitation": "active", "Automatable": "no", "Technical Impact": "partial"}, "version": "2.0.3", "timestamp": "2020-07-27T00:00:00+00:00", "role": "CISA Coordinator"}, "affected_products": [{"vendor": "Cisco", "product": "Anyconnect Secure Mobility Client", "ranges": ["avant 4.8.02042"], "first_unaffected": ["4.8.02042"], "source": "NVD"}, {"vendor": "Cisco", "product": "Cisco AnyConnect Secure Mobility Client", "ranges": ["de unspecified à n/a (exclue)"], "first_unaffected": ["n/a"], "source": "CVE.org"}], "kev_name": "Cisco AnyConnect Secure Mobility Client for Windows Uncontrolled Search Path Vulnerability", "kev_short_description": "Cisco AnyConnect Secure Mobility Client for Windows allows for incorrect handling of directory paths. An attacker with valid credentials on Windows would be able to copy malicious files to arbitrary locations with system level privileges. This could include DLL pre-loading, DLL hijacking, and other related attacks.", "kev_ransomware": "Known", "kev_notes": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-win-path-traverse-qO4HWBsj; https://nvd.nist.gov/vuln/detail/CVE-2020-3153", "kev_cwes": ["CWE-427"], "wordfence_id": "", "mentions_sources": [], "version_match": "unknown", "risk_score": 57, "risk_class": "Important", "impact": {"confidentialite": "aucun", "integrite": "élevé", "disponibilite": "aucun", "summary": "Un attaquant exploitant cette vulnérabilité pourrait, selon les conditions décrites par les sources, nécessite un accès local, avec des privilèges existants, affecter l'intégrité du système.", "basis": "CVSS 3.1"}, "mechanism": "Chemin de recherche non contrôlé : une bibliothèque non prévue peut être chargée.", "mitigation": {"correction": {"available": true, "text": "Mettre à jour : selon les sources, ne sont plus concernées les versions à partir de Anyconnect Secure Mobility Client 4.8.02042, Cisco AnyConnect Secure Mobility Client n/a."}, "mitigation": {"specific": "Aucune mesure de mitigation spécifique confirmée par les sources consultées. Consultez les références officielles pour d'éventuelles mesures détaillées.", "general": ["Maintenir le produit à jour et activer les mises à jour de sécurité.", "Restreindre l'exposition réseau du service au strict nécessaire.", "Appliquer le principe du moindre privilège.", "Surveiller les journaux et les alertes de sécurité."], "specific_links": []}, "containment": {"applicable": true, "actions": ["Action recommandée par la CISA : Apply updates per vendor instructions.", "Isoler ou restreindre l'accès au service concerné.", "Restreindre les flux réseau entrants/sortants liés au composant.", "Renforcer la surveillance des journaux et des accès.", "Désactiver temporairement le composant vulnérable si l'activité le permet."]}, "note": "Priorité aux consignes officielles de l'éditeur et des références. Vérifiez toujours l'avis de sécurité avant toute intervention en production.", "official_links": [{"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-win-path-traverse-qO4HWBsj", "groupe": "avis_editeur", "groupe_titre": "Avis de sécurité de l'éditeur", "editeur": "Cisco", "domaine": "tools.cisco.com"}]}, "plain": {"verdict": "now", "verdict_label": "Exploité par des attaquants · à traiter aujourd'hui", "verdict_css": "now", "verdict_rank": 0, "headline": "Faille de sécurité signalée dans Anyconnect Secure Mobility Client", "headline_is_derived": false, "action": "Mettre à jour vers Anyconnect Secure Mobility Client 4.8.02042, Cisco AnyConnect Secure Mobility Client n/a ou plus récent, version publiée comme non concernée.", "action_kind": "update", "concerned": [{"version": "Anyconnect Secure Mobility Client 4.8.02042, Cisco AnyConnect Secure Mobility Client n/a ou plus récent", "state": "safe", "state_label": "Non concerné", "todo": "Rien à faire. Gardez les mises à jour automatiques activées."}, {"version": "unspecified", "state": "hit", "state_label": "Concerné", "todo": "Mettre à jour vers Anyconnect Secure Mobility Client 4.8.02042, Cisco AnyConnect Secure Mobility Client n/a ou plus récent, version publiée comme non concernée."}, {"version": "Je ne connais pas ma version", "state": "unknown", "state_label": "À vérifier", "todo": "La version s'affiche généralement dans le menu « À propos » ou « Aide » du logiciel."}], "steps": [{"title": "Sauvegarder avant d'intervenir", "detail": "Une copie récente des données et de la configuration. Si votre hébergeur propose une sauvegarde en un clic, c'est le moment.", "duration": "10 min", "priority": false}, {"title": "Mettre à jour vers Anyconnect Secure Mobility Client 4.8.02042, Cisco AnyConnect Secure Mobility Client n/a ou plus récent, version publiée comme non concernée", "detail": "C'est la correction officielle. Tant qu'elle n'est pas appliquée, les autres mesures ne sont que temporaires.", "duration": "15 à 45 min", "priority": true}, {"title": "En attendant : restreindre l'accès à l'appareil", "detail": "L'exploitation demande un accès local à la machine. Limiter qui peut s'y connecter suffit à contenir le risque immédiat.", "duration": "20 min", "priority": false}, {"title": "Vérifier que vous n'avez pas déjà été touché", "detail": "Cette faille est activement exploitée. Contrôler les comptes créés récemment, les connexions inhabituelles et les fichiers modifiés depuis la date de publication.", "duration": "30 min", "priority": true}, {"title": "Confirmer que tout fonctionne encore", "detail": "Après correction : page d'accueil, connexion, et les deux ou trois fonctions dont vous vous servez tous les jours.", "duration": "10 min", "priority": false}], "exploited": true, "exploited_label": "Oui, des attaques réelles sont constatées", "fixed_label": "Anyconnect Secure Mobility Client 4.8.02042, Cisco AnyConnect Secure Mobility Client n/a (non concernée selon les sources)", "affected_label": "unspecified"}, "severity_display": "Moyenne", "cvss_is_legacy": false, "risk_score_computable": true, "identifier": "CVE-2020-3153", "severity_fr": "Moyenne", "epss_pct": 28.3, "source_records": [{"source": "NVD", "label": "NVD, NIST", "date_label": "Publié dans la base", "date": "2020-02-19", "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-3153"}, {"source": "CVE.org", "label": "CVE.org, programme CVE", "date_label": "Publié par l'organisme CNA", "date": "2020-02-19", "url": "https://www.cve.org/CVERecord?id=CVE-2020-3153"}, {"source": "CISA", "label": "CISA KEV", "date_label": "Ajout au catalogue", "date": "2022-10-24", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3153"}, {"source": "FIRST EPSS", "label": "FIRST EPSS", "date_label": "Score daté du", "date": "2026-10-07", "url": "https://api.first.org/data/v1/epss?cve=CVE-2020-3153"}], "exploit_public": true, "reseau_sans_auth": false, "exposition": "Avec un accès à la machine", "owasp": [{"code": "A08", "nom": "Défaillances d'intégrité des logiciels ou des données", "nom_officiel": "Software or Data Integrity Failures", "slug": "a08-integrite-des-logiciels-et-des-donnees", "libelle": "A08:2025 Défaillances d'intégrité des logiciels ou des données", "url_officielle": "https://top10.owasp.org/2025/A08_2025-Software_or_Data_Integrity_Failures/"}]}, "presentation": {"en_bref": [{"question": "Est-elle attaquée ?", "ton": "alerte", "reponse": "Oui, attaques constatées", "source": "Catalogue CISA KEV"}, {"question": "Existe-t-il un correctif ?", "ton": "bon", "reponse": "Oui : 4.8.02042, n/a", "source": "Versions publiées comme non concernées"}, {"question": "Comment l'attaquer ?", "ton": "neutre", "reponse": "Avec un accès à la machine", "source": "Vecteur CVSS publié"}, {"question": "Risque d'exploitation", "ton": "alerte", "reponse": "28,3 % sur 30 jours", "source": "Plus probable que 98 % des failles connues"}], "references": [{"cle": "avis_editeur", "titre": "Avis de sécurité de l'éditeur", "explication": "La parole de l'éditeur du produit : elle fait foi pour savoir quoi installer.", "items": [{"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-win-path-traverse-qO4HWBsj", "domaine": "tools.cisco.com", "editeur": "Cisco", "etiquettes": ["Avis de l'éditeur"], "nom": "", "lien": true, "casse": false}]}, {"cle": "avis_tiers", "titre": "Avis d'autorités et d'organismes tiers", "explication": "CERT, agences gouvernementales, bases de vulnérabilités, chercheurs.", "items": [{"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3153", "domaine": "www.cisa.gov", "editeur": "CISA", "etiquettes": ["Ressource gouvernementale américaine", "Ressource gouvernementale"], "nom": "", "lien": true, "casse": false}]}, {"cle": "exploit", "titre": "Codes d'exploitation référencés", "explication": "Les sources signalent un code d'exploitation public. Par prudence, CyberAlert affiche le site qui l'héberge sans lien direct : l'information utile ici est son existence, qui rend la faille plus facile à attaquer.", "items": [{"url": "http://packetstormsecurity.com/files/157340/Cisco-AnyConnect-Secure-Mobility-Client-4.8.01090-Privilege-Escalation.html", "domaine": "packetstormsecurity.com", "editeur": "Packet Storm", "etiquettes": ["Code d'exploitation", "Avis d'un tiers", "Base de vulnérabilités"], "nom": "", "lien": false, "casse": false}, {"url": "http://packetstormsecurity.com/files/158219/Cisco-AnyConnect-Path-Traversal-Privilege-Escalation.html", "domaine": "packetstormsecurity.com", "editeur": "Packet Storm", "etiquettes": ["Code d'exploitation", "Avis d'un tiers", "Base de vulnérabilités"], "nom": "", "lien": false, "casse": false}, {"url": "http://packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-Escalation.html", "domaine": "packetstormsecurity.com", "editeur": "Packet Storm", "etiquettes": ["Code d'exploitation", "Avis d'un tiers", "Base de vulnérabilités"], "nom": "", "lien": false, "casse": false}, {"url": "http://seclists.org/fulldisclosure/2020/Apr/43", "domaine": "seclists.org", "editeur": "", "etiquettes": ["Code d'exploitation", "Liste de diffusion", "Avis d'un tiers"], "nom": "", "lien": false, "casse": false}]}], "liens_correction": [{"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-win-path-traverse-qO4HWBsj", "domaine": "tools.cisco.com", "editeur": "Cisco", "etiquettes": ["Avis de l'éditeur"], "nom": "", "lien": true, "casse": false, "groupe": "avis_editeur", "groupe_titre": "Avis de sécurité de l'éditeur"}], "nb_exploits": 4, "cvss": {"version": "3.1", "vecteur": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N", "metriques": [{"code": "AV", "nom": "Vecteur d'attaque", "valeur": "Local (accès à la machine)", "brut": "L", "explication": "D'où l'attaquant doit agir."}, {"code": "AC", "nom": "Complexité de l'attaque", "valeur": "Faible", "brut": "L", "explication": "Conditions hors du contrôle de l'attaquant."}, {"code": "PR", "nom": "Privilèges requis", "valeur": "Faibles (compte ordinaire)", "brut": "L", "explication": "Droits dont l'attaquant a besoin avant d'attaquer."}, {"code": "UI", "nom": "Interaction de l'utilisateur", "valeur": "Aucune", "brut": "N", "explication": "Une victime doit-elle cliquer ou ouvrir quelque chose ?"}, {"code": "S", "nom": "Portée", "valeur": "Modifiée (d'autres composants peuvent être touchés)", "brut": "C", "explication": "L'attaque peut-elle toucher d'autres composants que celui qui est vulnérable ?"}, {"code": "C", "nom": "Confidentialité", "valeur": "Aucun", "brut": "N", "explication": "Accès à des informations protégées."}, {"code": "I", "nom": "Intégrité", "valeur": "Élevé", "brut": "H", "explication": "Modification de données ou du système."}, {"code": "A", "nom": "Disponibilité", "valeur": "Aucun", "brut": "N", "explication": "Arrêt ou ralentissement du service."}], "calculateur": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N", "specification": "https://www.first.org/cvss/v3.1/specification-document"}, "cvss4": null, "cwe": [{"id": "CWE-427", "nom": "", "url": "https://cwe.mitre.org/data/definitions/427.html"}], "owasp": [{"code": "A08", "nom": "Défaillances d'intégrité des logiciels ou des données", "nom_officiel": "Software or Data Integrity Failures", "slug": "a08-integrite-des-logiciels-et-des-donnees", "libelle": "A08:2025 Défaillances d'intégrité des logiciels ou des données", "url_officielle": "https://top10.owasp.org/2025/A08_2025-Software_or_Data_Integrity_Failures/"}], "ssvc": {"lignes": [{"nom": "Exploitation", "valeur": "Exploitation active constatée", "brut": "active"}, {"nom": "Automatisable", "valeur": "Non : l'attaque ne peut pas être entièrement automatisée", "brut": "no"}, {"nom": "Impact technique", "valeur": "Partiel : contrôle ou informations limités", "brut": "partial"}], "version": "2.0.3", "date": "2020-07-27", "role": "CISA Coordinator", "url": "https://www.cisa.gov/stakeholder-specific-vulnerability-categorization-ssvc"}, "chronologie": [{"date": "2019-12-12", "libelle": "Identifiant réservé", "qui": "Programme CVE"}, {"date": "2020-02-19", "libelle": "Publication de la vulnérabilité", "qui": "cisco"}, {"date": "2020-07-27", "libelle": "Décision SSVC publiée", "qui": "CISA"}, {"date": "2022-10-24", "libelle": "Ajout au catalogue des failles exploitées", "qui": "CISA"}, {"date": "2022-11-14", "libelle": "Échéance de correction fixée par la CISA", "qui": "CISA"}, {"date": "2026-08-12", "libelle": "Dernière mise à jour de la fiche source", "qui": "Source"}, {"date": "2026-10-07", "libelle": "Calcul du score EPSS affiché", "qui": "FIRST"}], "liens_officiels": [{"nom": "NVD (NIST)", "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-3153", "description": "Fiche de référence : CVSS, CPE, références étiquetées."}, {"nom": "CVE.org", "url": "https://www.cve.org/CVERecord?id=CVE-2020-3153", "description": "Enregistrement officiel publié par l'organisme qui a attribué l'identifiant."}, {"nom": "CISA KEV", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3153", "description": "Entrée du catalogue des failles activement exploitées."}, {"nom": "FIRST EPSS", "url": "https://api.first.org/data/v1/epss?cve=CVE-2020-3153", "description": "Score de probabilité d'exploitation du jour."}, {"nom": "OSV.dev", "url": "https://osv.dev/vulnerability/CVE-2020-3153", "description": "Paquets open source concernés et versions corrigées."}, {"nom": "GitHub Advisory Database", "url": "https://github.com/advisories?query=CVE-2020-3153", "description": "Avis de sécurité des dépendances logicielles."}], "produits": [{"vendor": "Cisco", "product": "Anyconnect Secure Mobility Client", "ranges": ["avant 4.8.02042"], "first_unaffected": ["4.8.02042"], "source": "NVD"}, {"vendor": "Cisco", "product": "Cisco AnyConnect Secure Mobility Client", "ranges": ["de unspecified à n/a (exclue)"], "first_unaffected": ["n/a"], "source": "CVE.org"}], "notes_kev": ["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-win-path-traverse-qO4HWBsj", "https://nvd.nist.gov/vuln/detail/CVE-2020-3153"]}, "consulted_at": "2026-10-08T07:13:07.462176+00:00"}