Detections
Analytics
Cisco FXOS Software Command Injection (cisco-sa-ucsciv-wGYtC78q)
medium Nessus Plugin ID 301136
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Synopsis
The remote device is missing a vendor-supplied security patch.Description
According to its self-reported version, Cisco FXOS Software is affected by a vulnerability.- A vulnerability in the web-based management interface of Cisco FXOS Software could allow an authenticated, local attacker with administrative privileges to perform command injection attacks on an affected system and elevate privileges to root. This vulnerability is due to insufficient input validation of command arguments supplied by the user. An attacker could exploit this vulnerability by authenticating to a device and submitting crafted input to the affected command. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system of the affected device with root-level privileges.
(CVE-2026-20099)
Please see the included Cisco BIDs and Cisco Security Advisory for more information.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCwo74009 and CSCwo74010.See Also
http://www.nessus.org/u?da315add
Plugin Details
Severity: Medium
ID: 301136
File Name: cisco-sa-ucsciv-wGYtC78q-fxos.nasl
Version: 1.1
Type: local
Family: CISCO
Published: 3/6/2026
Updated: 3/6/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: High
Score: 8.4
CVSS v2
Risk Factor: Medium
Base Score: 6.5
Vector: CVSS2#AV:L/AC:L/Au:M/C:C/I:C/A:C
CVSS Score Source: CVE-2026-20099
CVSS v3
Risk Factor: Medium
Base Score: 6.7
Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Vulnerability Information
CPE: cpe:/o:cisco:fxos
Required KB Items: installed_sw/FXOS
Patch Publication Date: 2/25/2026
Vulnerability Publication Date: 2/25/2026
Reference Information
CVE: CVE-2026-20099