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CVE record · CVE-2026-0257

PAN-OS: GlobalProtect Authentication Bypass Vulnerabilities

CVSS 7.8 HighCriticalIn CISA KEV · ransomwareEPSS 0.96 · 99th percentile

Critical, because:

  • In CISA’s KEV catalogue since 29 May 2026: it is known to be exploited.
  • CVSS score 7.8 (7.0 or more) and EPSS 0.96 (0.1 or more): a high score and a real chance of exploitation in the next 30 days.

How we decide what’s critical

Published by the CVE Program (CNA: palo_alto) at 13 May 2026, 18:15 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Palo Alto Networks Cloud NGFW
  • unaffected All custom
Other versions: unaffected
Palo Alto Networks PAN-OS
  • affected 12.1.0 to before 12.1.7, 12.1.4-h6 custom
  • affected 11.2.0 to before 11.2.12, 11.2.10-h7, 11.2.7-h14, 11.2.4-h17 custom
  • affected 11.1.0 to before 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33 custom
  • affected 10.2.0 to before 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34 custom
Other versions: unaffected
Palo Alto Networks Prisma Access
  • affected 10.2.0 to before 10.2.10-h36 custom
  • affected 11.2.0 to before 11.2.7-h13 custom
Other versions: unaffected
Identifiers
CVE-2026-0257
CNA
palo_alto
Weakness (CWE)
CWE-565
Tags
Published
13 May 2026
Updated
15 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.8 High 4.0 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/AU:N/R:A/V:D/RE:M/U:Red CNA (palo_alto)
  • CISA KEV Listed since 29 May 2026: known to be exploited. CISA reports use in ransomware campaigns.
  • EPSS 0.96, the 99th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 13 May 2026. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.