Description
Multiple buffer overflow vulnerabilities in the User-ID Terminal Server Agent (TSA) component of Palo Alto Networks PAN-OS software allow an unauthenticated attacker with network access to cause a denial of service (DoS) condition or potentially execute arbitrary code by sending specially crafted network traffic.
The security risk posed by this issue is minimized when the User-ID Terminal Server Agent connectivity is restricted to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://docs.paloaltonetworks.com/ngfw/help/10-2/user-identification/device-user-identification-terminal-services-agents#:~:text=To%20minimize%20security%20risk%2C%20restrict%20TS%20Agent%20connectivity%20to%20trusted%20internal%20IP%20addresses%20only. .
Panorama is not impacted by this vulnerability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Palo Alto Networks | Cloud NGFW | — | All |
| Palo Alto Networks | PAN-OS | 12.1.0 – < 12.1.8, 11.2.0 – < 11.2.13, 11.1.0 – < 11.1.16, 10.2.0 – < 10.2.7-h36 | 12.1.8 |
| Palo Alto Networks | Prisma Access | 11.2.0 – < 11.2.7-h18, 10.2.0 – < 10.2.10-h39 | 11.2.7-h18 |
Advisories 3
- SSA-104023 SSA-104023: Multiple Vulnerabilities in Palo Alto Networks PAN-OS on RUGGEDCOM APE1808 Devices Siemens ProductCERT · Nov 10, 2026
- NCSC-2026-0227 Kwetsbaarheden verholpen in Palo Alto Networks PAN-OS NCSC-NL (Netherlands) · Jul 13, 2026
- WID-SEC-2026-2261 Palo Alto Networks PAN-OS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 9, 2026