Description
An improper certificate validation vulnerability in PAN-OS allows users to connect Terminal Server Agents on Windows to PAN-OS using expired certificates even if the PAN-OS configuration would not normally permit them to do so.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Palo Alto Networks | Cloud NGFW | — | All |
| Palo Alto Networks | PAN-OS | 11.2.0 – < 11.2.8, 11.1.0 – < 11.1.11, 10.2.0 – < 10.2.17 | 11.2.8 |
| Palo Alto Networks | Prisma Access | 10.2.0 – < 10.2.10-h28 | 10.2.10-h28 |
Advisories 3
- ICSA-25-162-02 Siemens RUGGEDCOM APE1808 CISA ICS & IT advisories · Mar 12, 2026
- SSA-513708 SSA-513708: Multiple Vulnerabilities in Palo Alto Networks Virtual NGFW on RUGGEDCOM APE1808 Devices Siemens ProductCERT · Mar 10, 2026
- WID-SEC-2026-0404 Palo Alto Networks PAN-OS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 11, 2026
References
- https://security.paloaltonetworks.com/CVE-2026-0228 vendor-advisory