Detections
Analytics
Cisco IOS XE Software IOx Application Hosting Environment CRLF Injection (cisco-sa-iox-crlf-NvgKTKJZ)
medium Nessus Plugin ID 310105
Synopsis
The remote device is missing a vendor-supplied security patch.Description
According to its self-reported version, Cisco IOS-XE Software is affected by a vulnerability.- A vulnerability in the web-based Cisco IOx application hosting environment management interface of Cisco IOS XE Software could allow an unauthenticated, remote attacker to perform a carriage return line feed (CRLF) injection attack against a user. This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by sending crafted packets to an affected device. A successful exploit could allow the attacker to arbitrarily inject log entries, manipulate the structure of log files, or obscure legitimate log events. (CVE-2026-20113)
Please see the included Cisco BIDs and Cisco Security Advisory for more information.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwq69499.See Also
http://www.nessus.org/u?b40d902b
Plugin Details
Severity: Medium
ID: 310105
File Name: cisco-sa-iox-crlf-NvgKTKJZ-iosxe.nasl
Version: 1.1
Type: Combined
Family: CISCO
Published: 4/24/2026
Updated: 4/24/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 2.2
CVSS v2
Risk Factor: Medium
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS Score Source: CVE-2026-20113
CVSS v3
Risk Factor: Medium
Base Score: 5.3
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Vulnerability Information
CPE: cpe:/o:cisco:ios_xe
Required KB Items: Host/Cisco/IOS-XE/Version
Patch Publication Date: 3/25/2026
Vulnerability Publication Date: 3/25/2026
Reference Information
CVE: CVE-2026-20113