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Highest advisory severityHigh Exploited CISA KEV 1 vendor · 1 advisory

CVE-2026-0257

CVE-2026-0257: 1 tracked advisory record across Palo Alto. CISA KEV listed; exploitation observed. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

NVD detail CVE.org

Vendor advisory comparison

Palo Alto

1 advisory
  • Advisory severityHigh7.8

    High [CVE-2026-0257] PAN-OS: GlobalProtect Authentication Bypass Vulnerabilities

    CVE-2026-0257Source published

    CVE-2026-0257 PAN-OS: GlobalProtect Authentication Bypass Vulnerabilities

    Affected products in this advisory
    • PAN-OS
    • Prisma Access
    Source-reported affected versions
    • Prisma Access < 10.2.10-h36
    • Prisma Access < 11.2.7-h13
    Source-reported fixed versions
    • PAN-OS >= 12.1.7
    • PAN-OS >= 12.1.4-h6
    • PAN-OS >= 11.2.12
    • PAN-OS >= 11.2.10-h7

    15 more entries in the full advisory.

    Mitigation guidance
    • VersionMinor VersionSuggested SolutionCloud NGFW AllNo action needed.
    • PAN-OS 12.1 12.1.5 through 12.1.6 Upgrade to 12.1.7 or later. 12.1.2 through 12.1.4-h* Upgrade to 12.1.4-h6 or 12.1.7 or later.
    Workarounds
    • Customers can mitigate the risk of this issue by taking any of the following actions:
    • Use a dedicated certificate for Authentication Override cookies: Generate a new certificate exclusively for authentication override cookies and store it securely.
    Full advisory and evidenceOpen source bulletin

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