Cybersecurity alert from the Canadian Centre for Cyber Security
Serial number: AV26-462
Date: May 13, 2026
Updated: May 29, 2026
On May 13, 2026, Palo Alto Networks published security advisories to address vulnerabilities in the following products:
- PAN-OS 12.1 – versions prior to 12.1.4-h5
- PAN-OS 12.1 – versions prior to 12.1.7
- PAN-OS 11.2 – multiple versions
- PAN-OS 11.1 – multiple versions
- PAN-OS 10.2 – multiple versions
Update 1
On May 29, 2026, Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2026-0257 to their Known Exploited Vulnerabilities (KEV) Database.
Impacted products for CVE-2026-0257:
- PAN-OS 12.1 – versions prior to 12.1.4-h6
- PAN-OS 12.1 – versions prior to 12.1.7
- PAN-OS 11.2 – multiple versions
- PAN-OS 11.1 – multiple versions
- PAN-OS 10.2 – multiple versions
- Prisma Access 11.2.0 – versions prior to 11.2.7-h13
- Prisma Access 10.2.0 – versions prior to 10.2.10-h36
The Cyber Centre encourages users and administrators to review the provided web links, perform the suggested mitigations and apply the necessary updates.
Courtesy of Canadian Centre for Cyber Security
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