Detections
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Cisco IOS Software Web Services Remote Code Execution (cisco-sa-http-code-exec-WmfP3h3O)

critical Nessus Plugin ID 265975

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco IOS Software is affected by a web services remote code exeuction vulnerability:

 - 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.
 (CVE-2025-20363)

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwo35704

See Also

http://www.nessus.org/u?aded9b88

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwo35704

Plugin Details

Severity: Critical

ID: 265975

File Name: cisco-sa-http-code-exec-WmfP3h3O-ios.nasl

Version: 1.2

Type: combined

Family: CISCO

Published: 9/26/2025

Updated: 9/29/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.2

CVSS v2

Risk Factor: High

Base Score: 7.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2025-20363

CVSS v3

Risk Factor: Critical

Base Score: 9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Vulnerability Information

CPE: cpe:/o:cisco:ios

Required KB Items: Host/Cisco/IOS/Version

Patch Publication Date: 9/25/2025

Vulnerability Publication Date: 9/25/2025

Reference Information

CVE: CVE-2025-20363

CISCO-SA: cisco-sa-http-code-exec-WmfP3h3O

IAVA: 2025-A-0701

CISCO-BUG-ID: CSCwo35704