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CRITICAL

CVE-2025-20363

CVSS v3

9

CRITICAL

Score EPSS

6.9 %

probabilité d’exploitation au 2026-10-05

CISA KEV

Non

exploitation connue

Exploitation

—

statut SSVC

Description

A vulnerability in the web services of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure Firewall Threat Defense (FTD) Software, Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, remote attacker (Cisco ASA and FTD Software) or authenticated, remote attacker (Cisco IOS, IOS XE, and IOS XR Software) with low user privileges to execute arbitrary code on an affected device. This vulnerability is due to improper validation of user-supplied input in HTTP requests. An attacker could exploit this vulnerability by sending crafted HTTP requests to a targeted web service on an affected device after obtaining additional information about the system, overcoming exploit mitigations, or both. A successful exploit could allow the attacker to execute arbitrary code as root, which may lead to the complete compromise of the affected device. For more information about this vulnerability, see the Details ["#details"] section of this advisory.

Détails techniques

Publiée le
2025-09-25

Questions fréquentes

Qu’est-ce que CVE-2025-20363 ?

A vulnerability in the web services of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure Firewall Threat Defense (FTD) Software, Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, remote attacker (Cisco ASA and FTD Software) or authenticated, remote attacker (Cisco IOS, IOS XE, and IOS XR Software) with low user privileges to execute arbitrary code on an affected device. This vulnerability is due to improper validation of user-supplied input in HTTP requests. An attacker could exploit this vulnerability by sending crafted HTTP requests to a targeted web service on an affected device after obtaining additional information about the system, overcoming exploit mitigations, or both. A successful exploit could allow the attacker to execute arbitrary code as root, which may lead to the complete compromise of the affected device. For more information about this vulnerability, see the Details ["#details"] section of this advisory.

CVE-2025-20363 est-elle activement exploitée ?

Aucune exploitation active de CVE-2025-20363 n’est confirmée. Son score EPSS était de 6.9 % au 2026-10-05, soit la probabilité estimée d’exploitation dans les 30 prochains jours.

Quel est le score CVSS de CVE-2025-20363 ?

CVE-2025-20363 a un score de base CVSS v3 de 9 (gravité CRITICAL).

CVE-2025-20363 touche-t-elle votre environnement ?

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Autres vulnérabilités 2025 à trier

Classées par probabilité d’exploitation (EPSS).

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