7.8
High
Exploited
· ransomware
CVE-2026-0257 Palo Alto Networks PAN-OS Authentication Bypass Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Ransomware campaigns
Known to be used
Weakness
CWE-565
Description
Authentication bypass vulnerabilities in the GlobalProtect portal and gateway of Palo Alto Networks PAN-OS® software allows the attacker to bypass security restrictions and establish an unauthorized VPN connection. Panorama and Cloud NGFW are not impacted by these issues.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Cloud NGFW | Versions not published | |
| PAN-OS 12.1 | 12.1.0 → latest | No fix stated |
| PAN-OS 11.2 | 11.2.0 → latest | No fix stated |
| PAN-OS 11.1 | 11.1.0 → latest | No fix stated |
| PAN-OS 10.2 | 10.2.0 → latest | No fix stated |
| Prisma Access 11.2 | 11.2.0 → < 11.2.7-h13 | 11.2.7-h13 |
| Prisma Access 10.2 | 10.2.0 → < 10.2.10-h36 | 10.2.10-h36 |
| RUGGEDCOM APE1808 | Versions not published |
References
- security.paloaltonetworks.com security.paloaltonetworks.com
Timeline
- Published
- Added to the KEV catalogue
- Last modified
Other CVEs of Cloud NGFW
The 114 CVEs of Cloud NGFW →
CVE-2026-0316
A stored cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious…
1.1
Low
CVE-2026-0317
A denial of service vulnerability in Palo Alto Networks PAN-OS software enables an authenticated user with a read-only…
1.2
Low
CVE-2026-0318
A stack-based buffer overflow vulnerability in the log processing functionality of Palo Alto Networks PAN-OS® software…
4.6
Medium
CVE-2026-0319
An improper input handling vulnerability in the GlobalProtect™ gateway of Palo Alto Networks PAN-OS software enables…
4.9
Medium