CVE-2025-20363
Published: Sep 25, 2025
Modified: Feb 26, 2026
CVSS v3.1
9.0
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.
| Vendor | Product | Versions |
|---|---|---|
Cisco | IOS | affected 12.2(15)Baffected 12.2(16)B1affected 12.2(16)B2affected 12.2(16)Baffected 12.2(15)BC2a+2000 more versions |
Cisco | Cisco IOS XR Software | affected 6.5.1affected 6.5.2affected 6.5.3affected 6.6.2affected 6.6.3+8 more versions |
Cisco | Cisco Adaptive Security Appliance (ASA) Software | affected 9.8.1affected 9.8.1.5affected 9.8.1.7affected 9.8.2affected 9.8.2.8+215 more versions |
Cisco | Cisco IOS XE Software | affected 3.2.0SGaffected 3.2.1SGaffected 3.2.2SGaffected 3.2.3SGaffected 3.2.4SG+451 more versions |
Cisco | Cisco Firepower Threat Defense Software | affected 6.2.3affected 6.2.3.1affected 6.2.3.2affected 6.2.3.3affected 6.2.3.4+89 more versions |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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