Description
A denial-of-service (DoS) vulnerability in the Advanced DNS Security (ADNS) feature of Palo Alto Networks PAN-OS® software enables an unauthenticated attacker to initiate system reboots using a maliciously crafted packet. Repeated attempts to initiate a reboot causes the firewall to enter maintenance mode.
Cloud NGFW and Prisma Access® are 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 – < 12.1.4, 11.2.0 – < 11.2.10 | 12.1.4 |
| Palo Alto Networks | Prisma Access | — | — |
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-2026-0229 vendor-advisory