Palo Alto Networks PAN-OS Authentication Bypass Vulnerability
An authentication bypass in the Palo Alto Networks PAN-OS software enables an unauthenticated attacker with network access to the management web interface to bypass the authentication otherwise required by the PAN-OS management web…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 4 / 5
- KEV catalog (CISA)18 Feb 2025
- Exploited in EUVD (ENISA)18 Feb 2025
- Used by ransomwareno
- EPSS above 10 %98.5%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Description ENISA EUVD
An authentication bypass in the Palo Alto Networks PAN-OS software enables an unauthenticated attacker with network access to the management web interface to bypass the authentication otherwise required by the PAN-OS management web interface and invoke certain PHP scripts. While invoking these PHP scripts does not enable remote code execution, it can negatively impact integrity and confidentiality of PAN-OS. You can greatly reduce the risk of this issue by restricting access to the management web interface to only trusted internal IP addresses according to our recommended best practices deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 . This issue does not affect Cloud NGFW or Prisma Access software.
Affected products
- 11.2.0 <11.2.4-h4
- 11.1.0 <11.1.6-h1
- 10.1.0 <10.1.14-h9
- 10.2.0 <10.2.7-h24
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
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Published
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Exploitation reported (ENISA)
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Added to the KEV catalog
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CISA remediation due date
-
EPSS peak: 98.5%
References
Other exploited vulnerabilities from the same vendor
- CVE-2026-0322Palo Alto Networks PAN-OS Code Injection Vulnerability4.7 · Rising fast
- CVE-2026-0257Palo Alto Networks PAN-OS Authentication Bypass Vulnerability9.0 · Actively exploited
- CVE-2026-0300Palo Alto Networks PAN-OS Out-of-bounds Write Vulnerability7.4 · Background exploitation
- CVE-2025-0111Palo Alto Networks PAN-OS File Read Vulnerability4.1 · Background exploitation
- CVE-2024-3393Palo Alto Networks PAN-OS Malicious DNS Packet Vulnerability6.8 · Background exploitation
- CVE-2024-9474Palo Alto Networks PAN-OS Management Interface OS Command Injection Vulnerability8.0 · Background exploitation