SB2026041709 - Authentication Bypass by Primary Weakness in Cisco Secure Web Appliance
Published: April 17, 2026
Security Bulletin ID
SB2026041709
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Authentication Bypass by Primary Weakness (CVE-ID: CVE-2026-20152)
CWE-ID: CWE-305 - Authentication Bypass by Primary Weakness
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to improper validation of user-supplied authentication input in HTTP requests. A remote attacker can bypass policy enforcement on the target device.
Remediation
Install update from vendor's website.