CRLF Injection Vulnerability in Cisco IOS XE Software Management Interface
CVE-2026-20113

5.3MEDIUM

Key Information:

Vendor

Cisco
Status
Cisco iOS Xe Software
Vendor
CVE Published:
25 March 2026

Badges

👾 Exploit Exists

What is CVE-2026-20113?

A security flaw in the Cisco IOx application hosting environment's management interface of Cisco IOS XE Software may expose the system to CRLF injection attacks. This vulnerability arises from inadequate input validation, enabling unauthenticated remote attackers to send specifically crafted packets to an affected device. A successful exploitation could allow attackers to inject arbitrary log entries, distort the structure of log files, or obscure legitimate log events, ultimately compromising the integrity of the logging mechanisms.

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Affected Version(s)

Cisco IOS XE Software 16.6.1

Cisco IOS XE Software 16.6.2

Cisco IOS XE Software 16.6.3

References

https://sec.cloudapps.cisco.com/security/center/content/C...

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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