SB2026080611 - Authenticated DoS in Cisco IOS XE
Published: August 6, 2026
Security Bulletin ID
SB2026080611
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper privilege management (CVE-ID: CVE-2026-20308)
CWE-ID: CWE-269 - Improper Privilege Management
CVSSv4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to insufficient input validation in the web-based management interface when handling crafted input. A remote user can send crafted input to cause a denial of service.
Only devices with the web-based management interface enabled are vulnerable.
Remediation
Install update from vendor's website.