PT-2026-27796 · Cisco · Cisco Ios Xe

Published 2026-03-25 · Updated 2026-03-30 · CVE-2026-20113

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software (affected versions not specified)

Description A flaw exists in the web-based Cisco IOx application hosting environment management interface that could allow a remote attacker to inject carriage return line feed (CRLF) characters against a user without authentication. This is due to inadequate validation of user input. An attacker could exploit this by sending crafted packets to a vulnerable device, potentially allowing arbitrary log entry injection, manipulation of log file structure, or obscuring legitimate log events.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-93

Related Identifiers

BDU:2026-06475

CVE-2026-20113

Affected Products

Cisco Ios Xe

References · 7

• 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://bdu.fstec.ru/vul/2026-06475 · Security Note
• https://reddit.com/r/pwnhub/comments/1s4so3w/cisco_addresses_serious_vulnerabilities_in_ios · Reddit Post
• https://twitter.com/CVEnew/status/2038618148115505577 · Twitter Post
• https://twitter.com/the_yellow_fall/status/2036984814101029305 · Twitter Post
• https://reddit.com/r/pwnhub/comments/1s3q3cp/cisco_catalyst_switch_vulnerabilities_could_lead · Reddit Post