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CVE-2026-0257

CRITICALCVSS 9.1/10Actively ExploitedEPSS 86.68%

Last modified

CVE-2026-0257 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 86.68% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS 4.0
7.8/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:A/V:D/RE:M/U:Red

EPSS Probability
86.68%

99.7th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .

Weakness Enumeration

Affected Software

VendorProductVersions
PaloaltonetworksPan-Os< 10.2.7
PaloaltonetworksPan-Os10.2.7
PaloaltonetworksPan-Os10.2.8
PaloaltonetworksPan-Os10.2.9
PaloaltonetworksPan-Os10.2.10
PaloaltonetworksPan-Os10.2.11
PaloaltonetworksPan-Os10.2.12
PaloaltonetworksPan-Os10.2.13
PaloaltonetworksPan-Os10.2.14
PaloaltonetworksPan-Os10.2.15
PaloaltonetworksPan-Os10.2.16
PaloaltonetworksPan-Os10.2.17
PaloaltonetworksPan-Os10.2.18
PaloaltonetworksPan-Os11.1.0
PaloaltonetworksPan-Os11.1.1
PaloaltonetworksPan-Os11.1.2
PaloaltonetworksPan-Os11.1.3
PaloaltonetworksPan-Os11.1.4
PaloaltonetworksPan-Os11.1.5
PaloaltonetworksPan-Os11.1.6
PaloaltonetworksPan-Os11.1.7
PaloaltonetworksPan-Os11.1.8
PaloaltonetworksPan-Os11.1.9
PaloaltonetworksPan-Os11.1.10
PaloaltonetworksPan-Os11.1.11
PaloaltonetworksPan-Os11.1.12
PaloaltonetworksPan-Os11.1.13
PaloaltonetworksPan-Os11.1.14
PaloaltonetworksPan-Os11.2.0
PaloaltonetworksPan-Os11.2.1
PaloaltonetworksPan-Os11.2.2
PaloaltonetworksPan-Os11.2.3
PaloaltonetworksPan-Os11.2.4
PaloaltonetworksPan-Os11.2.5
PaloaltonetworksPan-Os11.2.6
PaloaltonetworksPan-Os11.2.7
PaloaltonetworksPan-Os11.2.8
PaloaltonetworksPan-Os11.2.9
PaloaltonetworksPan-Os11.2.10
PaloaltonetworksPan-Os11.2.11
PaloaltonetworksPan-Os12.1.2
PaloaltonetworksPan-Os12.1.3
PaloaltonetworksPan-Os12.1.4
PaloaltonetworksPan-Os12.1.5
PaloaltonetworksPan-Os12.1.6
PaloaltonetworksPrisma AccessAll versions
SiemensRuggedcom Ape1808 FirmwareAll versions

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-0257?
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.
How severe is CVE-2026-0257?
CVE-2026-0257 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 86.68% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.
How do I fix CVE-2026-0257?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST