SecuriTricks - CVE-2025-20363

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.

Product(s) Impacted

Vendor	Product	Versions
Cisco	Secure Firewall Adaptive Security Appliance Secure Firewall Threat Defense Ios Ios Xe Ios Xr	* * * * *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-122

Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	cisco	secure_firewall_adaptive_security_appliance	/	/	/	/	/	/	/	/
a	cisco	secure_firewall_threat_defense	/	/	/	/	/	/	/	/
a	cisco	ios	/	/	/	/	/	/	/	/
a	cisco	ios_xe	/	/	/	/	/	/	/	/
a	cisco	ios_xr	/	/	/	/	/	/	/	/

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-http-code-exec-WmfP3h3O

CVSS Score

9.0 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: HIGH
Privileges Required: NONE
Scope: CHANGED
Confidentiality Impact: HIGH
Integrity Impact: HIGH
Availability Impact: HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

View Vector String

Timeline

Published: Sept. 25, 2025, 4:15 p.m.
Last Modified: Sept. 26, 2025, 2:07 p.m.

Status : Undergoing Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

psirt@cisco.com

CVE-2025-20363