CVSS v3
8.8
HIGH
Score EPSS
0.7 %
probabilité d’exploitation au 2026-09-28
CISA KEV
Non
exploitation connue
Exploitation
—
statut SSVC
Description
A vulnerability in Cisco Secure FMC Software could allow an authenticated, remote attacker to execute arbitrary commands at the root privilege level. This vulnerability is due to unsecured deserialization of web-management user-controlled data. An attacker could exploit this vulnerability by authenticating to the device and sending a crafted HTTP payload. A successful exploit could allow the attacker to save the crafted payload and then execute it on the underlying operating system as ro
Détails techniques
- Publiée le
- 2026-09-16
- Dernière modification
- 2026-09-18
Questions fréquentes
Qu’est-ce que CVE-2026-20340 ?
A vulnerability in Cisco Secure FMC Software could allow an authenticated, remote attacker to execute arbitrary commands at the root privilege level. This vulnerability is due to unsecured deserialization of web-management user-controlled data. An attacker could exploit this vulnerability by authenticating to the device and sending a crafted HTTP payload. A successful exploit could allow the attacker to save the crafted payload and then execute it on the underlying operating system as ro
CVE-2026-20340 est-elle activement exploitée ?
Aucune exploitation active de CVE-2026-20340 n’est confirmée. Son score EPSS était de 0.7 % au 2026-09-28, soit la probabilité estimée d’exploitation dans les 30 prochains jours.
Quel est le score CVSS de CVE-2026-20340 ?
CVE-2026-20340 a un score de base CVSS v3 de 8.8 (gravité HIGH).
CVE-2026-20340 touche-t-elle votre environnement ?
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