PT-2026-27796 · Cisco · Cisco Ios Xe

Published 2026-03-25 · Updated 2026-03-26 · CVE-2026-20113

NVD

CVSS v3.1

5.3

Medium

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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.

Fix

Weakness Enumeration

CWE-93

Related Identifiers

CVE-2026-20113

Affected Products

Cisco Ios Xe

References · 4

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-crlf-NvgKTKJZ · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-20113 · Security Note
• https://reddit.com/r/pwnhub/comments/1s3q3cp/cisco_catalyst_switch_vulnerabilities_could_lead · Reddit Post
• https://twitter.com/the_yellow_fall/status/2036984814101029305 · Twitter Post