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CVE-2026-20113

MEDIUM
5.3
CVSS Score
Published: March 25, 2026 at 04:08 PM UTC
Updated: June 17, 2026 at 10:17 AM UTC
1 product affected across 1 vendorIOS Xe

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

IOS Xe· Cisco
60%
16.10.116.10.1a16.10.1b16.10.1c16.10.1d16.10.1e16.10.1f16.10.1g16.10.1s16.10.216.10.316.11.116.11.1a16.11.1b16.11.1s16.11.216.12.116.12.10a16.12.1116.12.1a16.12.1c16.12.1s16.12.1t16.12.1w16.12.1x16.12.1y16.12.1z116.12.1z216.12.216.12.2a16.12.2s16.12.316.12.3a16.12.3s16.12.416.12.4a16.12.516.12.5a16.12.5b16.12.616.12.6a16.12.716.12.816.6.116.6.1016.6.216.6.316.6.416.6.4a16.6.516.6.5a16.6.616.6.716.6.816.6.916.7.116.7.1a16.7.1b16.7.216.7.316.7.416.8.116.8.1a16.8.1b16.8.1c16.8.1d16.8.1e16.8.1s16.8.216.8.316.9.116.9.1a16.9.1b16.9.1s16.9.216.9.316.9.416.9.516.9.5f16.9.616.9.716.9.817.1.117.1.1a17.1.1s17.1.1t17.1.317.10.117.10.1a17.10.1b17.11.117.11.1a17.12.117.12.1a17.12.1w17.12.1x17.12.1y17.12.1z17.12.1z117.12.1z217.12.1z317.12.1z417.12.1z517.12.1z617.12.217.12.2a17.12.317.12.3a17.12.417.12.4a17.12.4b17.12.517.12.5a17.12.5b17.12.5c17.12.5d17.12.617.12.6a17.12.6b17.13.117.13.1a17.14.117.14.1a17.15.117.15.1a17.15.1b17.15.1w17.15.1x17.15.1y17.15.1z17.15.217.15.2a17.15.2b17.15.2c17.15.317.15.3a17.15.3b17.15.417.15.4d17.15.4e17.16.117.16.1a17.17.117.18.117.18.1a17.18.1w17.18.1x17.2.117.2.1a17.2.1r17.2.1v17.2.217.2.317.3.117.3.1a17.3.1w17.3.1x17.3.1z17.3.217.3.2a17.3.317.3.417.3.4a17.3.4b17.3.4c17.3.517.3.5a17.3.5b17.3.617.3.717.3.817.3.8a17.4.117.4.1a17.4.1b17.4.217.4.2a17.5.117.5.1a17.6.117.6.1a17.6.1w17.6.1x17.6.1y17.6.1z17.6.1z117.6.217.6.317.6.3a17.6.417.6.517.6.5a17.6.617.6.6a17.6.717.6.817.6.8a17.7.117.7.1a17.7.1b17.7.217.8.117.8.1a17.9.117.9.1a17.9.1w17.9.1x17.9.1x117.9.1y17.9.1y117.9.217.9.2a17.9.317.9.3a17.9.417.9.4a17.9.517.9.5a17.9.5b17.9.5e17.9.5f17.9.617.9.6a17.9.717.9.7a17.9.7b17.9.8

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-crlf-NvgKTKJZ

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMcisco
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-93

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