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Palo Alto Networks Security AdvisoriesCVE-2026-0249

CVE-2026-0249: GlobalProtect App: Certificate Validation Bypass Vulnerabilities

Multiple improper certificate validation vulnerabilities in the Palo Alto Networks GlobalProtect™ app enables an attacker to intercept encrypted communications and potentially compromise the endpoint. This can enable a local non-administrative operating system user or an attacker on the same subnet to redirect traffic to an unauthorized server and facilitate the installation of malicious software. The GlobalProtect app on Linux, Windows, iOS and GlobalProtect UWP app are not affected.

Read the vendor bulletin Get alerts for GlobalProtect App
7.6CVSS out of 10High severity
Scope

What the vendor says is affected

  • GlobalProtect App
  • GlobalProtect App 6.3
  • GlobalProtect App 6.2
  • GlobalProtect App 6.1
  • GlobalProtect App 6.0

Versions the vendor lists as fixed

  • GlobalProtect App 6.3 >= 6.3.3-h9 (6.3.3-999) on macOS
  • GlobalProtect App 6.2 >= 6.2.8-h10 (6.2.8-948) on macOS
  • GlobalProtect App 6.1 >= 6.1.14 on Android, >= 6.1.14 on ChromeOS
  • GlobalProtect App 6.0 >= 6.0.14 on Android, >= 6.0.14 on ChromeOS, >= 6.0.13 on macOS
  • GlobalProtect App All on Windows, All on Linux, All on iOS, All on Windows UWP
Next step

What the vendor recommends

VERSION MINOR VERSION SUGGESTED SOLUTION GlobalProtect App 6.1 on Android 6.1.0 through 6.1.13 Upgrade to 6.1.14 or later. GlobalProtect App 6.0 on Android 6.0.0 through 6.0.13 Upgrade to 6.0.14 or later. GlobalProtect App 6.1 on Chrome OS 6.1.0 through 6.1.13 Upgrade to 6.1.14 or later. GlobalProtect App 6.0 on Chrome OS 6.0.0 through 6.0.13 Upgrade to 6.0.14 or later. GlobalProtect App 6.3 on macOS 6.3.0 through 6.3.3-h8 Upgrade to 6.3.3-h9 (6.3.3-999) or later. GlobalProtect App 6.2 on macOS 6.2.0 through 6.2.8-h9 Upgrade to 6.2.8-h10 (6.2.8-948) or later. GlobalProtect App 6.0 on macOS 6.0.0 through 6.0.12 Upgrade to 6.0.13 or later. GlobalProtect App on Windows No action needed. GlobalProtect App on Linux No action needed. GlobalProtect App on iOS No action needed. GlobalProtect App on UWP No action needed.

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  1. Published by Palo Alto Networks

    The publication date reported by the vendor.

  2. Updated by Palo Alto Networks

    The vendor changed the advisory after it was first published.

  3. Added to SecurityAlert

    We collected the advisory from the official source.

  4. Confirmed at the source

    Our collector saw this advisory during a later source check.

Vulnerabilities

CVEs named in this advisory

CVE-2026-0249View CVSS, KEV, EPSS, and threat context
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