SB2026040905 - Improper Verification of Cryptographic Signature in Palo Alto Cortex XSIAM and Cortex XSOAR
Published: April 9, 2026
Security Bulletin ID
SB2026040905
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2026-0234)
CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature
CVSSv4: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to improper verification of a cryptographic signature in Microsoft Teams integration. A remote attacker can access and modify protected resources.
Remediation
Install update from vendor's website.