Palo Alto Networks PAN-OS Authentication Bypass Vulnerability
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…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 5 / 5
- KEV catalog (CISA)29 May 2026
- Exploited in EUVD (ENISA)29 May 2026
- Used by ransomwareyes
- EPSS above 10 %95.6%
- 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, follow applicable BOD 22-01 guidance for cloud services, 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
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
- 11.2.0 <11.2.7-h13
- 11.2.0 <11.2.12, 11.2.10-h7, 11.2.7-h14, 11.2.4-h17
- 10.2.0 <10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34
- 12.1.0 <12.1.7, 12.1.4-h6
- 10.2.0 <10.2.10-h36
- 11.1.0 <11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33
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: 96.9%
References
Other exploited vulnerabilities from the same vendor
- CVE-2026-0322Palo Alto Networks PAN-OS Code Injection Vulnerability4.7 · Rising fast
- 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-2025-0108Palo Alto Networks PAN-OS Authentication Bypass Vulnerability8.9 · 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