Improper access control in Cisco IOS XE - CVE-2026-20267
Published: August 6, 2026 / Updated: August 6, 2026
Vulnerability identifier: #VU141047
CSH Severity: Medium
CVSS v4: 6.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H]
CVE-ID: CVE-2026-20267
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to bypass access controls.
The vulnerability exists due to improper access control in Cisco IOS XE Software when handling requests. A remote authenticated user can send a specially crafted request to bypass access controls.
The issue affects Cisco IOS XE Software running in autonomous or controller mode.
Affected software
Cisco IOS XE
How to mitigate CVE-2026-20267
Install security update from vendor's website.
Cisco IOS XE - addressed in versions 17.9.10, 17.12.8, 17.15.6, 17.18.4, 17.18.4a, 26.1.2