{"item": {"cve_id": "CVE-2026-20045", "ghsa_id": "", "osv_id": "", "title": "Cisco Unified Communications Products Remote Code Execution Vulnerability", "description": "A vulnerability in Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unity Connection, and Cisco Webex Calling Dedicated Instance could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. \r\n\r\nThis vulnerability is due to improper validation of user-supplied input in HTTP requests. An attacker could exploit this vulnerability by sending a sequence of crafted HTTP requests to the web-based management interface of an affected device. A successful exploit could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root. \r\nNote: Cisco has assigned this security advisory a Security Impact Rating (SIR) of Critical rather than High as the score indicates. The reason is that exploitation of this vulnerability could result in an attacker elevating privileges to root.", "published_at": "2026-01-21T17:16:08.077", "modified_at": "2026-06-17T10:16:58.097", "vendor": "Cisco", "product": "Unified Communications Manager", "affected_versions": ["12.5(1)SU2", "12.5(1)SU1", "12.5(1)", "12.5(1)SU3", "12.5(1)SU4", "14", "12.5(1)SU5", "14SU1", "12.5(1)SU6", "14SU2", "12.5(1)SU7", "12.5(1)SU7a", "14SU3", "12.5(1)SU8", "12.5(1)SU8a", "15", "15SU1", "14SU4", "14SU4a", "15SU1a", "12.5(1)SU9", "15SU2", "15.0.1.13010-1", "15.0.1.13011-1", "15.0.1.13012-1", "15.0.1.13013-1", "15.0.1.13014-1", "15.0.1.13015-1", "15.0.1.13016-1", "15.0.1.13017-1", "15SU3a", "14SU2a", "15SU3", "14SU3a"], "fixed_versions": [], "cvss_score": 8.2, "cvss_version": "3.1", "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N", "severity": "HIGH", "epss_score": 0.04541, "epss_percentile": 0.91294, "epss_date": "2026-10-06", "is_kev": true, "kev_date": "2026-01-21", "kev_due_date": "2026-02-11", "kev_action": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.", "cwe_ids": ["CWE-94"], "attack_vector": "NETWORK", "attack_complexity": "LOW", "privileges_required": "NONE", "user_interaction": "NONE", "references": ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-voice-rce-mORhqY4b", "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20045"], "source_urls": {"NVD": "https://nvd.nist.gov/vuln/detail/CVE-2026-20045", "CVE.org": "https://www.cve.org/CVERecord?id=CVE-2026-20045", "CISA": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20045", "FIRST EPSS": "https://api.first.org/data/v1/epss?cve=CVE-2026-20045"}, "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-voice-rce-mORhqY4b", "tags": ["Vendor Advisory"], "source": "NVD", "name": ""}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20045", "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": "2025-10-08T11:59:15.354Z", "ssvc": {"options": {"Exploitation": "active", "Automatable": "yes", "Technical Impact": "total"}, "version": "2.0.3", "timestamp": "2026-01-22T04:55:44.107919Z", "role": "CISA Coordinator"}, "affected_products": [{"vendor": "Cisco", "product": "Unified Communications Manager", "ranges": ["de 12.5 à 14su5 (exclue)", "de 15.0 à 15su3a (incluse)"], "first_unaffected": ["14su5"], "source": "NVD"}, {"vendor": "Cisco", "product": "Unified Communications Manager Im And Presence Service", "ranges": ["de 12.5 à 14su5 (exclue)", "de 15.0 à 15su3a (incluse)"], "first_unaffected": ["14su5"], "source": "NVD"}, {"vendor": "Cisco", "product": "Unity Connection", "ranges": ["de 12.5 à 14su5 (exclue)", "de 15.0 à 15su3 (incluse)"], "first_unaffected": ["14su5"], "source": "NVD"}, {"vendor": "Cisco", "product": "Cisco Unified Communications Manager", "ranges": ["12.5(1)SU2", "12.5(1)SU1", "12.5(1)", "12.5(1)SU3", "12.5(1)SU4", "14", "12.5(1)SU5", "14SU1", "12.5(1)SU6", "14SU2", "12.5(1)SU7", "12.5(1)SU7a", "14SU3", "12.5(1)SU8", "12.5(1)SU8a", "15", "15SU1", "14SU4", "14SU4a", "15SU1a"], "first_unaffected": [], "source": "CVE.org"}, {"vendor": "Cisco", "product": "Cisco Unified Communications Manager IM and Presence Service", "ranges": ["12.5(1)", "12.5(1)SU1", "12.5(1)SU2", "12.5(1)SU3", "12.5(1)SU4", "14", "12.5(1)SU5", "14SU1", "12.5(1)SU6", "14SU2", "14SU2a", "12.5(1)SU7", "14SU3", "12.5(1)SU8", "15", "15SU1", "14SU4", "12.5(1)SU9", "15SU2", "15SU3"], "first_unaffected": [], "source": "CVE.org"}, {"vendor": "Cisco", "product": "Cisco Unity Connection", "ranges": ["12.5(1)", "12.5(1)SU1", "12.5(1)SU2", "12.5(1)SU3", "12.5(1)SU4", "14", "12.5(1)SU5", "14SU1", "12.5(1)SU6", "14SU2", "12.5(1)SU7", "14SU3", "12.5(1)SU8", "14SU3a", "12.5(1)SU8a", "15", "15SU1", "14SU4", "12.5(1)SU9", "15SU2"], "first_unaffected": [], "source": "CVE.org"}], "kev_name": "Cisco Unified Communications Products Code Injection Vulnerability", "kev_short_description": "Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unity Connection, and Cisco Webex Calling Dedicated Instance contain a code injection vulnerability that could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root.", "kev_ransomware": "Unknown", "kev_notes": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-voice-rce-mORhqY4b ; https://nvd.nist.gov/vuln/detail/CVE-2026-20045", "kev_cwes": ["CWE-94"], "wordfence_id": "", "mentions_sources": [], "version_match": "unknown", "risk_score": 69, "risk_class": "Important", "impact": {"confidentialite": "élevé", "integrite": "limité", "disponibilite": "aucun", "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 et l'intégrité du système.", "basis": "CVSS 3.1"}, "mechanism": "Injection de code : du code non prévu peut être interprété par l'application.", "mitigation": {"correction": {"available": true, "text": "Mettre à jour : selon les sources, ne sont plus concernées les versions à partir de Unified Communications Manager 14su5, Unified Communications Manager Im And Presence Service 14su5, Unity Connection 14su5."}, "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 mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.", "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-voice-rce-mORhqY4b", "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": "Un attaquant peut faire exécuter son propre code par Unified Communications Manager, à distance et sans compte", "headline_is_derived": true, "action": "Mettre à jour vers Unified Communications Manager 14su5, Unified Communications Manager Im And Presence Service 14su5, Unity Connection 14su5 ou plus récent, version publiée comme non concernée.", "action_kind": "update", "concerned": [{"version": "Unified Communications Manager 14su5, Unified Communications Manager Im And Presence Service 14su5, Unity Connection 14su5 ou plus récent", "state": "safe", "state_label": "Non concerné", "todo": "Rien à faire. Gardez les mises à jour automatiques activées."}, {"version": "12.5(1)SU2, 12.5(1)SU1, 12.5(1), 12.5(1)SU3", "state": "hit", "state_label": "Concerné", "todo": "Mettre à jour vers Unified Communications Manager 14su5, Unified Communications Manager Im And Presence Service 14su5, Unity Connection 14su5 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 Unified Communications Manager 14su5, Unified Communications Manager Im And Presence Service 14su5, Unity Connection 14su5 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": "Unified Communications Manager 14su5, Unified Communications Manager Im And Presence Service 14su5, Unity Connection 14su5 (non concernée selon les sources)", "affected_label": "12.5(1)SU2, 12.5(1)SU1, 12.5(1), 12.5(1)SU3"}, "severity_display": "Élevée", "cvss_is_legacy": false, "risk_score_computable": true, "identifier": "CVE-2026-20045", "severity_fr": "Élevée", "epss_pct": 4.5, "source_records": [{"source": "NVD", "label": "NVD, NIST", "date_label": "Publié dans la base", "date": "2026-01-21", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20045"}, {"source": "CVE.org", "label": "CVE.org, programme CVE", "date_label": "Publié par l'organisme CNA", "date": "2026-01-21", "url": "https://www.cve.org/CVERecord?id=CVE-2026-20045"}, {"source": "CISA", "label": "CISA KEV", "date_label": "Ajout au catalogue", "date": "2026-01-21", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20045"}, {"source": "FIRST EPSS", "label": "FIRST EPSS", "date_label": "Score daté du", "date": "2026-10-06", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-20045"}], "exploit_public": false, "reseau_sans_auth": true, "exposition": "À distance, sans compte et sans action d'un utilisateur", "owasp": [{"code": "A05", "nom": "Injection", "nom_officiel": "Injection", "slug": "a05-injection", "libelle": "A05:2025 Injection", "url_officielle": "https://top10.owasp.org/2025/A05_2025-Injection/"}]}, "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 : 14su5", "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": "vigilance", "reponse": "4,5 % sur 30 jours", "source": "Plus probable que 91 % 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-voice-rce-mORhqY4b", "domaine": "sec.cloudapps.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-2026-20045", "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-voice-rce-mORhqY4b", "domaine": "sec.cloudapps.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": 0, "cvss": {"version": "3.1", "vecteur": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N", "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": "Inchangée", "brut": "U", "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": "Faible", "brut": "L", "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:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N", "specification": "https://www.first.org/cvss/v3.1/specification-document"}, "cvss4": null, "cwe": [{"id": "CWE-94", "nom": "Improper Control of Generation of Code ('Code Injection')", "url": "https://cwe.mitre.org/data/definitions/94.html"}], "owasp": [{"code": "A05", "nom": "Injection", "nom_officiel": "Injection", "slug": "a05-injection", "libelle": "A05:2025 Injection", "url_officielle": "https://top10.owasp.org/2025/A05_2025-Injection/"}], "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": "2026-01-22", "role": "CISA Coordinator", "url": "https://www.cisa.gov/stakeholder-specific-vulnerability-categorization-ssvc"}, "chronologie": [{"date": "2025-10-08", "libelle": "Identifiant réservé", "qui": "Programme CVE"}, {"date": "2026-01-21", "libelle": "Publication de la vulnérabilité", "qui": "cisco"}, {"date": "2026-01-21", "libelle": "Ajout au catalogue des failles exploitées", "qui": "CISA"}, {"date": "2026-01-22", "libelle": "Décision SSVC publiée", "qui": "CISA"}, {"date": "2026-02-11", "libelle": "Échéance de correction fixée par la CISA", "qui": "CISA"}, {"date": "2026-06-17", "libelle": "Dernière mise à jour de la fiche source", "qui": "Source"}, {"date": "2026-10-06", "libelle": "Calcul du score EPSS affiché", "qui": "FIRST"}], "liens_officiels": [{"nom": "NVD (NIST)", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20045", "description": "Fiche de référence : CVSS, CPE, références étiquetées."}, {"nom": "CVE.org", "url": "https://www.cve.org/CVERecord?id=CVE-2026-20045", "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-2026-20045", "description": "Entrée du catalogue des failles activement exploitées."}, {"nom": "FIRST EPSS", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-20045", "description": "Score de probabilité d'exploitation du jour."}, {"nom": "OSV.dev", "url": "https://osv.dev/vulnerability/CVE-2026-20045", "description": "Paquets open source concernés et versions corrigées."}, {"nom": "GitHub Advisory Database", "url": "https://github.com/advisories?query=CVE-2026-20045", "description": "Avis de sécurité des dépendances logicielles."}], "produits": [{"vendor": "Cisco", "product": "Unified Communications Manager", "ranges": ["de 12.5 à 14su5 (exclue)", "de 15.0 à 15su3a (incluse)"], "first_unaffected": ["14su5"], "source": "NVD"}, {"vendor": "Cisco", "product": "Unified Communications Manager Im And Presence Service", "ranges": ["de 12.5 à 14su5 (exclue)", "de 15.0 à 15su3a (incluse)"], "first_unaffected": ["14su5"], "source": "NVD"}, {"vendor": "Cisco", "product": "Unity Connection", "ranges": ["de 12.5 à 14su5 (exclue)", "de 15.0 à 15su3 (incluse)"], "first_unaffected": ["14su5"], "source": "NVD"}, {"vendor": "Cisco", "product": "Cisco Unified Communications Manager", "ranges": ["12.5(1)SU2", "12.5(1)SU1", "12.5(1)", "12.5(1)SU3", "12.5(1)SU4", "14", "12.5(1)SU5", "14SU1", "12.5(1)SU6", "14SU2", "12.5(1)SU7", "12.5(1)SU7a", "14SU3", "12.5(1)SU8", "12.5(1)SU8a", "15", "15SU1", "14SU4", "14SU4a", "15SU1a"], "first_unaffected": [], "source": "CVE.org"}, {"vendor": "Cisco", "product": "Cisco Unified Communications Manager IM and Presence Service", "ranges": ["12.5(1)", "12.5(1)SU1", "12.5(1)SU2", "12.5(1)SU3", "12.5(1)SU4", "14", "12.5(1)SU5", "14SU1", "12.5(1)SU6", "14SU2", "14SU2a", "12.5(1)SU7", "14SU3", "12.5(1)SU8", "15", "15SU1", "14SU4", "12.5(1)SU9", "15SU2", "15SU3"], "first_unaffected": [], "source": "CVE.org"}, {"vendor": "Cisco", "product": "Cisco Unity Connection", "ranges": ["12.5(1)", "12.5(1)SU1", "12.5(1)SU2", "12.5(1)SU3", "12.5(1)SU4", "14", "12.5(1)SU5", "14SU1", "12.5(1)SU6", "14SU2", "12.5(1)SU7", "14SU3", "12.5(1)SU8", "14SU3a", "12.5(1)SU8a", "15", "15SU1", "14SU4", "12.5(1)SU9", "15SU2"], "first_unaffected": [], "source": "CVE.org"}], "notes_kev": ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-voice-rce-mORhqY4b", "https://nvd.nist.gov/vuln/detail/CVE-2026-20045"]}, "consulted_at": "2026-10-07T08:14:00.606076+00:00"}