{"item": {"cve_id": "CVE-2023-20198", "ghsa_id": "", "osv_id": "", "title": "CVE-2023-20198", "description": "Cisco is providing an update for the ongoing investigation into observed exploitation of the web UI feature in Cisco IOS XE Software. We are updating the list of fixed releases and adding the Software Checker. Our investigation has determined that the actors exploited two previously unknown issues. The attacker first exploited CVE-2023-20198 to gain initial access and issued a privilege 15 command to create a local user and password combination. This allowed the user to log in with normal user access. The attacker then exploited another component of the web UI feature, leveraging the new local user to elevate privilege to root and write the implant to the file system. Cisco has assigned CVE-2023-20273 to this issue. CVE-2023-20198 has been assigned a CVSS Score of 10.0. CVE-2023-20273 has been assigned a CVSS Score of 7.2. Both of these CVEs are being tracked by CSCwh87343.", "published_at": "2023-10-16T16:15:10.023", "modified_at": "2026-06-17T05:29:47.117", "vendor": "Rockwellautomation", "product": "Allen-bradley Stratix 5200 Firmware", "affected_versions": ["16.1.1", "16.1.2", "16.1.3", "16.2.1", "16.2.2", "16.3.1", "16.3.2", "16.3.3", "16.3.1a", "16.3.4", "16.3.5", "16.3.5b", "16.3.6", "16.3.7", "16.3.8", "16.3.9", "16.3.10", "16.3.11", "16.4.1", "16.4.2", "16.4.3", "16.5.1", "16.5.1a", "16.5.1b", "16.5.2", "16.5.3", "16.6.1", "16.6.2", "16.6.3", "16.6.4", "16.6.5", "16.6.4a", "16.6.5a", "16.6.6", "16.6.7", "16.6.8", "16.6.9", "16.6.10", "16.7.1", "16.7.1a", "16.7.1b", "16.7.2", "16.7.3", "16.7.4", "16.8.1", "16.8.1a", "16.8.1b", "16.8.1s", "16.8.1c", "16.8.1d", "16.8.2", "16.8.1e", "16.8.3", "16.9.1", "16.9.2", "16.9.1a", "16.9.1b", "16.9.1s", "16.9.3", "16.9.4", "16.9.3a", "16.9.5", "16.9.5f", "16.9.6", "16.9.7", "16.9.8", "16.10.1", "16.10.1a", "16.10.1b", "16.10.1s", "16.10.1c", "16.10.1e", "16.10.1d", "16.10.2", "16.10.1f", "16.10.1g", "16.10.3", "16.11.1", "16.11.1a", "16.11.1b", "16.11.2", "16.11.1s", "16.12.1", "16.12.1s", "16.12.1a", "16.12.1c", "16.12.1w", "16.12.2", "16.12.1y", "16.12.2a", "16.12.3", "16.12.8", "16.12.2s", "16.12.1x", "16.12.1t", "16.12.4", "16.12.3s", "16.12.3a", "16.12.4a", "16.12.5", "16.12.6", "16.12.1z1", "16.12.5a", "16.12.5b", "16.12.1z2", "16.12.6a", "16.12.7", "16.12.9", "16.12.10", "17.1.1", "17.1.1a", "17.1.1s", "17.1.1t", "17.1.3", "17.2.1", "17.2.1r", "17.2.1a", "17.2.1v", "17.2.2", "17.2.3", "17.3.1", "17.3.2", "17.3.3", "17.3.1a", "17.3.1w", "17.3.2a", "17.3.1x", "17.3.1z", "17.3.4", "17.3.5", "17.3.4a", "17.3.6", "17.3.4b", "17.3.4c", "17.3.5a", "17.3.5b", "17.3.7", "17.3.8", "17.4.1", "17.4.2", "17.4.1a", "17.4.1b", "17.4.2a", "17.5.1", "17.5.1a", "17.5.1b", "17.5.1c", "17.6.1", "17.6.2", "17.6.1w", "17.6.1a", "17.6.1x", "17.6.3", "17.6.1y", "17.6.1z", "17.6.3a", "17.6.4", "17.6.1z1", "17.6.5", "17.6.6", "17.7.1", "17.7.1a", "17.7.1b", "17.7.2", "17.10.1", "17.10.1a", "17.10.1b", "17.8.1", "17.8.1a", "17.9.1", "17.9.1w", "17.9.2", "17.9.1a", "17.9.1x", "17.9.1y", "17.9.3", "17.9.2a", "17.9.1x1", "17.9.3a", "17.9.4", "17.9.1y1", "17.11.1", "17.11.1a", "17.12.1", "17.12.1a", "17.11.99SW"], "fixed_versions": [], "cvss_score": 10.0, "cvss_version": "3.1", "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "severity": "CRITICAL", "epss_score": 0.99571, "epss_percentile": 0.99946, "epss_date": "2026-10-07", "is_kev": true, "kev_date": "2023-10-16", "kev_due_date": "2023-10-20", "kev_action": "Verify that instances of Cisco IOS XE Web UI are in compliance with BOD 23-02 and apply mitigations per vendor instructions. For affected products (Cisco IOS XE Web UI exposed to the internet or to untrusted networks), follow vendor instructions to determine if a system may have been compromised and immediately report positive findings to CISA.", "cwe_ids": ["CWE-420"], "attack_vector": "NETWORK", "attack_complexity": "LOW", "privileges_required": "NONE", "user_interaction": "NONE", "references": ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-webui-privesc-j22SaA4z", "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-webui-privesc-j22SaA4z", "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-20198"], "source_urls": {"NVD": "https://nvd.nist.gov/vuln/detail/CVE-2023-20198", "CVE.org": "https://www.cve.org/CVERecord?id=CVE-2023-20198", "CISA": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-20198", "FIRST EPSS": "https://api.first.org/data/v1/epss?cve=CVE-2023-20198"}, "patch_available": null, "workaround_available": null, "sources": ["NVD", "CVE.org", "CISA", "FIRST EPSS"], "reference_items": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-webui-privesc-j22SaA4z", "tags": ["Mitigation", "Vendor Advisory"], "source": "NVD", "name": ""}, {"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-webui-privesc-j22SaA4z", "tags": ["Mitigation", "Vendor Advisory", "x_transferred"], "source": "NVD", "name": ""}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-20198", "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": "2022-10-27T18:47:50.365Z", "ssvc": {"options": {"Exploitation": "active", "Automatable": "yes", "Technical Impact": "total"}, "version": "2.0.3", "timestamp": "2024-10-23T18:58:11.982740Z", "role": "CISA Coordinator"}, "affected_products": [{"vendor": "Rockwellautomation", "product": "Allen-bradley Stratix 5200 Firmware", "ranges": ["avant 17.12.02"], "first_unaffected": ["17.12.02"], "source": "NVD"}, {"vendor": "Rockwellautomation", "product": "Allen-bradley Stratix 5800 Firmware", "ranges": ["avant 17.12.02"], "first_unaffected": ["17.12.02"], "source": "NVD"}, {"vendor": "Cisco", "product": "Ios Xe", "ranges": ["de 16.12 à 16.12.10a (exclue)", "de 17.3 à 17.3.8a (exclue)", "de 17.6 à 17.6.6a (exclue)", "de 17.9 à 17.9.4a (exclue)"], "first_unaffected": ["16.12.10a", "17.3.8a", "17.6.6a", "17.9.4a"], "source": "NVD"}, {"vendor": "Cisco", "product": "Cisco IOS XE Software", "ranges": ["16.1.1", "16.1.2", "16.1.3", "16.2.1", "16.2.2", "16.3.1", "16.3.2", "16.3.3", "16.3.1a", "16.3.4", "16.3.5", "16.3.5b", "16.3.6", "16.3.7", "16.3.8", "16.3.9", "16.3.10", "16.3.11", "16.4.1", "16.4.2"], "first_unaffected": [], "source": "CVE.org"}], "kev_name": "Cisco IOS XE Web UI Privilege Escalation Vulnerability", "kev_short_description": "Cisco IOS XE Web UI contains a privilege escalation vulnerability in the web user interface that could allow a remote, unauthenticated attacker to create an account with privilege level 15 access. The attacker can then use that account to gain control of the affected device.", "kev_ransomware": "Unknown", "kev_notes": "https://www.cisco.com/c/en/us/support/docs/ios-nx-os-software/ios-xe-dublin-17121/221128-software-fix-availability-for-cisco-ios.html;  https://nvd.nist.gov/vuln/detail/CVE-2023-20198", "kev_cwes": ["CWE-420"], "wordfence_id": "", "mentions_sources": [], "version_match": "unknown", "risk_score": 82, "risk_class": "Critique", "impact": {"confidentialite": "élevé", "integrite": "élevé", "disponibilite": "élevé", "summary": "Un attaquant exploitant cette vulnérabilité pourrait, selon les conditions décrites par les sources, exploitable à distance (réseau), sans authentification préalable, affecter la confidentialité des données, l'intégrité du système et la disponibilité du service.", "basis": "CVSS 3.1"}, "mechanism": "", "mitigation": {"correction": {"available": true, "text": "Mettre à jour : selon les sources, ne sont plus concernées les versions à partir de Allen-bradley Stratix 5200 Firmware 17.12.02, Allen-bradley Stratix 5800 Firmware 17.12.02, Ios Xe 16.12.10a, Ios Xe 17.3.8a, Ios Xe 17.6.6a."}, "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 : Verify that instances of Cisco IOS XE Web UI are in compliance with BOD 23-02 and apply mitigations per vendor instructions. For affected products (Cisco IOS XE Web UI exposed to the internet or to untrusted networks), follow vendor instructions to determine if a system may have been compromised and immediately report positive findings to CISA.", "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://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-webui-privesc-j22SaA4z", "groupe": "avis_editeur", "groupe_titre": "Avis de sécurité de l'éditeur", "editeur": "Cisco", "domaine": "sec.cloudapps.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 Allen-bradley Stratix 5200 Firmware", "headline_is_derived": false, "action": "Mettre à jour vers Allen-bradley Stratix 5200 Firmware 17.12.02, Allen-bradley Stratix 5800 Firmware 17.12.02, Ios Xe 16.12.10a, Ios Xe 17.3.8a ou plus récent, version publiée comme non concernée.", "action_kind": "update", "concerned": [{"version": "Allen-bradley Stratix 5200 Firmware 17.12.02, Allen-bradley Stratix 5800 Firmware 17.12.02, Ios Xe 16.12.10a, Ios Xe 17.3.8a ou plus récent", "state": "safe", "state_label": "Non concerné", "todo": "Rien à faire. Gardez les mises à jour automatiques activées."}, {"version": "16.1.1, 16.1.2, 16.1.3, 16.2.1", "state": "hit", "state_label": "Concerné", "todo": "Mettre à jour vers Allen-bradley Stratix 5200 Firmware 17.12.02, Allen-bradley Stratix 5800 Firmware 17.12.02, Ios Xe 16.12.10a, Ios Xe 17.3.8a 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 Allen-bradley Stratix 5200 Firmware 17.12.02, Allen-bradley Stratix 5800 Firmware 17.12.02, Ios Xe 16.12.10a, Ios Xe 17.3.8a 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 : réduire l'exposition sur Internet", "detail": "La faille est exploitable à distance. Limiter l'accès au service depuis l'extérieur (pare-feu, filtrage d'adresses, VPN) réduit fortement le risque.", "duration": "30 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": "Allen-bradley Stratix 5200 Firmware 17.12.02, Allen-bradley Stratix 5800 Firmware 17.12.02, Ios Xe 16.12.10a, Ios Xe 17.3.8a (non concernée selon les sources)", "affected_label": "16.1.1, 16.1.2, 16.1.3, 16.2.1"}, "severity_display": "Critique", "cvss_is_legacy": false, "risk_score_computable": true, "identifier": "CVE-2023-20198", "severity_fr": "Critique", "epss_pct": 99.6, "source_records": [{"source": "NVD", "label": "NVD, NIST", "date_label": "Publié dans la base", "date": "2023-10-16", "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-20198"}, {"source": "CVE.org", "label": "CVE.org, programme CVE", "date_label": "Publié par l'organisme CNA", "date": "2023-10-16", "url": "https://www.cve.org/CVERecord?id=CVE-2023-20198"}, {"source": "CISA", "label": "CISA KEV", "date_label": "Ajout au catalogue", "date": "2023-10-16", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-20198"}, {"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-2023-20198"}], "exploit_public": false, "reseau_sans_auth": true, "exposition": "À distance, sans compte et sans action d'un utilisateur", "owasp": []}, "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 : 17.12.02, 16.12.10a, 17.3.8a, 17.6.6a…", "source": "Versions publiées comme non concernées"}, {"question": "Comment l'attaquer ?", "ton": "alerte", "reponse": "À distance, sans compte et sans action d'un utilisateur", "source": "Vecteur CVSS publié"}, {"question": "Risque d'exploitation", "ton": "alerte", "reponse": "99,6 % sur 30 jours", "source": "Plus probable que 100 % 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://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-webui-privesc-j22SaA4z", "domaine": "sec.cloudapps.cisco.com", "editeur": "Cisco", "etiquettes": ["Mesure de contournement", "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-2023-20198", "domaine": "www.cisa.gov", "editeur": "CISA", "etiquettes": ["Ressource gouvernementale américaine", "Ressource gouvernementale"], "nom": "", "lien": true, "casse": false}]}], "liens_correction": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-webui-privesc-j22SaA4z", "domaine": "sec.cloudapps.cisco.com", "editeur": "Cisco", "etiquettes": ["Mesure de contournement", "Avis de l'éditeur"], "nom": "", "lien": true, "casse": false, "groupe": "avis_editeur", "groupe_titre": "Avis de sécurité de l'éditeur"}], "nb_exploits": 0, "cvss": {"version": "3.1", "vecteur": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "metriques": [{"code": "AV", "nom": "Vecteur d'attaque", "valeur": "Réseau (à distance, y compris par Internet)", "brut": "N", "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": "Aucun (pas de compte)", "brut": "N", "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": "Élevé", "brut": "H", "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": "Élevé", "brut": "H", "explication": "Arrêt ou ralentissement du service."}], "calculateur": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "specification": "https://www.first.org/cvss/v3.1/specification-document"}, "cvss4": null, "cwe": [{"id": "CWE-420", "nom": "", "url": "https://cwe.mitre.org/data/definitions/420.html"}], "owasp": [], "ssvc": {"lignes": [{"nom": "Exploitation", "valeur": "Exploitation active constatée", "brut": "active"}, {"nom": "Automatisable", "valeur": "Oui : l'attaque peut être enchaînée sans intervention humaine", "brut": "yes"}, {"nom": "Impact technique", "valeur": "Total : contrôle complet du composant ou de ses informations", "brut": "total"}], "version": "2.0.3", "date": "2024-10-23", "role": "CISA Coordinator", "url": "https://www.cisa.gov/stakeholder-specific-vulnerability-categorization-ssvc"}, "chronologie": [{"date": "2022-10-27", "libelle": "Identifiant réservé", "qui": "Programme CVE"}, {"date": "2023-10-16", "libelle": "Publication de la vulnérabilité", "qui": "cisco"}, {"date": "2023-10-16", "libelle": "Ajout au catalogue des failles exploitées", "qui": "CISA"}, {"date": "2023-10-20", "libelle": "Échéance de correction fixée par la CISA", "qui": "CISA"}, {"date": "2024-10-23", "libelle": "Décision SSVC publiée", "qui": "CISA"}, {"date": "2026-06-17", "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-2023-20198", "description": "Fiche de référence : CVSS, CPE, références étiquetées."}, {"nom": "CVE.org", "url": "https://www.cve.org/CVERecord?id=CVE-2023-20198", "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-2023-20198", "description": "Entrée du catalogue des failles activement exploitées."}, {"nom": "FIRST EPSS", "url": "https://api.first.org/data/v1/epss?cve=CVE-2023-20198", "description": "Score de probabilité d'exploitation du jour."}, {"nom": "OSV.dev", "url": "https://osv.dev/vulnerability/CVE-2023-20198", "description": "Paquets open source concernés et versions corrigées."}, {"nom": "GitHub Advisory Database", "url": "https://github.com/advisories?query=CVE-2023-20198", "description": "Avis de sécurité des dépendances logicielles."}], "produits": [{"vendor": "Rockwellautomation", "product": "Allen-bradley Stratix 5200 Firmware", "ranges": ["avant 17.12.02"], "first_unaffected": ["17.12.02"], "source": "NVD"}, {"vendor": "Rockwellautomation", "product": "Allen-bradley Stratix 5800 Firmware", "ranges": ["avant 17.12.02"], "first_unaffected": ["17.12.02"], "source": "NVD"}, {"vendor": "Cisco", "product": "Ios Xe", "ranges": ["de 16.12 à 16.12.10a (exclue)", "de 17.3 à 17.3.8a (exclue)", "de 17.6 à 17.6.6a (exclue)", "de 17.9 à 17.9.4a (exclue)"], "first_unaffected": ["16.12.10a", "17.3.8a", "17.6.6a", "17.9.4a"], "source": "NVD"}, {"vendor": "Cisco", "product": "Cisco IOS XE Software", "ranges": ["16.1.1", "16.1.2", "16.1.3", "16.2.1", "16.2.2", "16.3.1", "16.3.2", "16.3.3", "16.3.1a", "16.3.4", "16.3.5", "16.3.5b", "16.3.6", "16.3.7", "16.3.8", "16.3.9", "16.3.10", "16.3.11", "16.4.1", "16.4.2"], "first_unaffected": [], "source": "CVE.org"}], "notes_kev": ["https://www.cisco.com/c/en/us/support/docs/ios-nx-os-software/ios-xe-dublin-17121/221128-software-fix-availability-for-cisco-ios.html", "https://nvd.nist.gov/vuln/detail/CVE-2023-20198"]}, "consulted_at": "2026-10-08T01:01:30.002589+00:00"}