CVE-2026-20091
Vulnérabilité moyenne dans Cisco Firepower Extensible Operating System (FXOS) (Cisco)
CVSS 4.8 · Moyenne
EPSS 0.2%
Cisco•Cisco Firepower Extensible Operating System (FXOS)•Versions : 4.1(3c), 9.12.3.2, 9.16.4.27, 4.2(1c), 9.17.1.13, 9.18.4.8, 9.16.3.15, 4.2(2e), 9.12.4.54, 9.12.4.56, 9.20.2.10, 9.12.4.7, 9.19.1.9, 9.12.4.4, 4.3(5d), 9.19.1.18, 4.1(3h), 9.12.2, 9.19.1.27, 4.2(1i), 9.17.1.9, 4.2(2c), 9.16.4.62, 4.1(3n), 9.12.4.55, 4.0(4o), 9.19.1.37, 9.16.1.28, 9.20.3.7, 9.20.3.10, 9.16.4.9, 4.2(3h), 9.16.2.7, 2.14.1.163, 9.18.4.29, 9.12.4.26, 4.3(4b), 4.2(3d), 9.16.4.55, 4.2(1k), 4.0(4k), 4.3(5c), 9.12.3.9, 9.18.3.56, 4.1(1b), 9.12.4.35, 9.12.4.29, 4.1(3a), 9.16.4.67, 4.0(2b), 9.18.3.55, 9.18.4.24, 4.3(5e), 9.12.1, 9.16.4.61, 9.12.4.13, 9.17.1.7, 9.18.4.22, 4.2(3o), 9.16.4.42, 4.0(4m), 4.0(1d), 9.12.4.30, 9.12.4.52, 9.16.3.19, 4.3(3a), 4.0(1a), 4.1(2b), 4.1(3j), 4.1(1d), 4.3(4a), 9.12.4.8, 4.2(3j), 4.2(3l), 9.17.1.33, 9.17.1, 9.16.4.48, 9.16.4.84, 9.18.4.53, 9.19.1.42, 4.2(3i), 2.14.1.131, 4.0(4h), 9.18.1.3, 4.1(1e), 4.1(4a), 4.1(3l), 4.2(3p), 4.2(3e), 4.3(4d), 4.1(1a), 4.2(1f), 9.17.1.10, 9.18.2, 9.18.3, 4.0(4d), 4.2(3b), 4.1(3m), 9.16.4.76, 4.0(4i), 9.18.4, 9.17.1.39, 9.17.1.20, 9.20.2, 9.12.2.1, 9.17.1.11, 4.3(5a), 9.20.3.13, 4.0(2d), 4.3(2c), 9.12.4.50, 9.16.4.39, 9.18.2.8, 4.2(3n), 2.14.1.167, 9.12.4, 4.1(3e), 9.12.2.5, 9.12.4.58, 4.3(2f), 9.12.4.39, 4.0(4c), 4.3(4e), 9.18.3.53, 9.18.1, 9.16.4.71, 9.16.3, 9.16.2.14, 9.12.4.62, 9.16.4.19, 9.12.4.65, 4.0(4n), 9.12.3, 9.12.3.7, 9.16.4.82, 9.19.1.22, 4.0(4l), 4.2(2d), 4.2(1n), 9.12.1.2, 9.20.3.16, 4.1(2c), 4.2(1m), 9.16.3.23, 4.0(4f), 4.1(3b), 9.16.2.11, 9.18.4.34, 4.1(1c), 4.0(1b), 9.18.4.47, 9.18.4.52, 9.16.3.3, 4.0(4a), 9.18.2.5, 4.2(3g), 4.1(2a), 4.1(3k), 9.16.2.3, 9.19.1.28, 9.17.1.45, 4.2(2a), 4.3(3c), 4.2(3m), 4.1(3f), 9.12.4.38, 9.20.3, 2.14.1.143, 9.17.1.15, 4.3(2e), 9.19.1.24, 9.18.3.39, 4.2(1d), 9.16.4.14, 9.16.2, 9.19.1, 9.16.4.38, 9.16.3.14, 4.0(4e), 9.12.4.10, 9.12.4.37, 9.12.1.3, 9.12.4.67, 4.0(1c), 9.12.4.24, 9.17.1.30, 9.18.4.40, 4.0(4g), 9.12.2.9, 9.20.3.20, 9.20.2.21, 9.18.2.7, 9.16.1, 9.20.3.4, 4.2(1l), 9.12.4.2, 9.12.4.47, 4.3(2b), 9.16.4.57, 9.19.1.5, 9.16.4, 9.18.3.46, 9.19.1.31, 9.12.4.18, 4.1(3d), 4.3(4f), 9.16.2.13, 9.12.4.40, 9.20.2.22, 9.18.4.50, 9.19.1.12, 9.12.4.48, 2.16.0.128, 9.18.4.5, 4.0(2a), 4.1(3i), 9.18.4.57, 9.12.3.12, 4.0(4b), 4.0(2e), 4.3(4c), 9.12.4.41, 4.2(3k)
Description
A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected system. An attacker could exploit this vulnerability by injecting malicious data into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit this vulnerability, the attacker must have valid credentials for a user account with the role of Administrator or AAA Administrator.
Gravité et risque d'exploitation
CVE-2026-20091 obtient un score CVSS de 4.8/10, soit une gravité moyenne. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.18 %, ce qui la place devant 7.2 % des CVE référencées.
Que faire ?
- Vérifiez si Cisco Firepower Extensible Operating System (FXOS) (versions 4.1(3c), 9.12.3.2, 9.16.4.27, 4.2(1c), 9.17.1.13, 9.18.4.8, 9.16.3.15, 4.2(2e), 9.12.4.54, 9.12.4.56, 9.20.2.10, 9.12.4.7, 9.19.1.9, 9.12.4.4, 4.3(5d), 9.19.1.18, 4.1(3h), 9.12.2, 9.19.1.27, 4.2(1i), 9.17.1.9, 4.2(2c), 9.16.4.62, 4.1(3n), 9.12.4.55, 4.0(4o), 9.19.1.37, 9.16.1.28, 9.20.3.7, 9.20.3.10, 9.16.4.9, 4.2(3h), 9.16.2.7, 2.14.1.163, 9.18.4.29, 9.12.4.26, 4.3(4b), 4.2(3d), 9.16.4.55, 4.2(1k), 4.0(4k), 4.3(5c), 9.12.3.9, 9.18.3.56, 4.1(1b), 9.12.4.35, 9.12.4.29, 4.1(3a), 9.16.4.67, 4.0(2b), 9.18.3.55, 9.18.4.24, 4.3(5e), 9.12.1, 9.16.4.61, 9.12.4.13, 9.17.1.7, 9.18.4.22, 4.2(3o), 9.16.4.42, 4.0(4m), 4.0(1d), 9.12.4.30, 9.12.4.52, 9.16.3.19, 4.3(3a), 4.0(1a), 4.1(2b), 4.1(3j), 4.1(1d), 4.3(4a), 9.12.4.8, 4.2(3j), 4.2(3l), 9.17.1.33, 9.17.1, 9.16.4.48, 9.16.4.84, 9.18.4.53, 9.19.1.42, 4.2(3i), 2.14.1.131, 4.0(4h), 9.18.1.3, 4.1(1e), 4.1(4a), 4.1(3l), 4.2(3p), 4.2(3e), 4.3(4d), 4.1(1a), 4.2(1f), 9.17.1.10, 9.18.2, 9.18.3, 4.0(4d), 4.2(3b), 4.1(3m), 9.16.4.76, 4.0(4i), 9.18.4, 9.17.1.39, 9.17.1.20, 9.20.2, 9.12.2.1, 9.17.1.11, 4.3(5a), 9.20.3.13, 4.0(2d), 4.3(2c), 9.12.4.50, 9.16.4.39, 9.18.2.8, 4.2(3n), 2.14.1.167, 9.12.4, 4.1(3e), 9.12.2.5, 9.12.4.58, 4.3(2f), 9.12.4.39, 4.0(4c), 4.3(4e), 9.18.3.53, 9.18.1, 9.16.4.71, 9.16.3, 9.16.2.14, 9.12.4.62, 9.16.4.19, 9.12.4.65, 4.0(4n), 9.12.3, 9.12.3.7, 9.16.4.82, 9.19.1.22, 4.0(4l), 4.2(2d), 4.2(1n), 9.12.1.2, 9.20.3.16, 4.1(2c), 4.2(1m), 9.16.3.23, 4.0(4f), 4.1(3b), 9.16.2.11, 9.18.4.34, 4.1(1c), 4.0(1b), 9.18.4.47, 9.18.4.52, 9.16.3.3, 4.0(4a), 9.18.2.5, 4.2(3g), 4.1(2a), 4.1(3k), 9.16.2.3, 9.19.1.28, 9.17.1.45, 4.2(2a), 4.3(3c), 4.2(3m), 4.1(3f), 9.12.4.38, 9.20.3, 2.14.1.143, 9.17.1.15, 4.3(2e), 9.19.1.24, 9.18.3.39, 4.2(1d), 9.16.4.14, 9.16.2, 9.19.1, 9.16.4.38, 9.16.3.14, 4.0(4e), 9.12.4.10, 9.12.4.37, 9.12.1.3, 9.12.4.67, 4.0(1c), 9.12.4.24, 9.17.1.30, 9.18.4.40, 4.0(4g), 9.12.2.9, 9.20.3.20, 9.20.2.21, 9.18.2.7, 9.16.1, 9.20.3.4, 4.2(1l), 9.12.4.2, 9.12.4.47, 4.3(2b), 9.16.4.57, 9.19.1.5, 9.16.4, 9.18.3.46, 9.19.1.31, 9.12.4.18, 4.1(3d), 4.3(4f), 9.16.2.13, 9.12.4.40, 9.20.2.22, 9.18.4.50, 9.19.1.12, 9.12.4.48, 2.16.0.128, 9.18.4.5, 4.0(2a), 4.1(3i), 9.18.4.57, 9.12.3.12, 4.0(4b), 4.0(2e), 4.3(4c), 9.12.4.41, 4.2(3k)) est présent sur votre parc.
- Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
- À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
- Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.