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Actively exploitedKnown ransomware use

CVE-2024-3400 Palo Alto Networks PAN-OS Command Injection Vulnerability

Palo Alto Networks PAN-OS GlobalProtect feature contains a command injection vulnerability that allows an unauthenticated attacker to execute commands with root privileges on the firewall.

From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.

Our Assessment

Should You Worry?

Patch nowCybergen assessment
  • CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 12 Apr 2024.
  • CISA lists it as known to be used in ransomware campaigns.
  • Rated Critical severity (CVSS 10.0, scored by Vendor).
  • This product type is often exposed to the internet, which is where attackers scan for it first.
  • Named in Cybergen threat actor reporting: BlackShrantac, DevMan.
  • It has been in the catalogue for 938 days. Systems still unpatched now have almost certainly been scanned for it.
The Vulnerability

What It Is

A command injection as a result of arbitrary file creation vulnerability in the GlobalProtect feature of Palo Alto Networks PAN-OS software for specific PAN-OS versions and distinct feature configurations may enable an unauthenticated attacker to execute arbitrary code with root privileges on the firewall. Cloud NGFW, Panorama appliances, and Prisma Access are not impacted by this vulnerability.

Affected Versions

ProductVersions
Palo Alto Networks PAN-OS10.2.0 to before 10.2.9-h1
11.0.0 to before 11.0.4-h1
Palo Alto Networks Cloud NGFWSee the vendor advisory
Palo Alto Networks Prisma AccessSee the vendor advisory

From the public CVE record, as supplied by the vendor. Always confirm against the vendor advisory.

From Watch to Action

What To Do Now

  1. 1

    Find it

    Search your asset inventory and external attack surface for Palo Alto Networks PAN-OS. Include cloud images, appliances and anything a supplier runs for you.

    Attack Surface Management
  2. 2

    Fix it

    Apply mitigations per vendor instructions as they become available. Otherwise, users with vulnerable versions of affected devices should enable Threat Prevention IDs available from the vendor. See the vendor bulletin for more details and a patch release schedule.

    Vulnerability Management
  3. 3

    Hunt for compromise

    If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.

    Incident Response
  4. 4

    Prove it is fixed

    Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.

    Penetration Testing

Vendor Advisories

Regulation

The Compliance Clock

Cyber EssentialsRated critical, so if it affects devices in your Cyber Essentials scope, the update must be installed within 14 days of the vendor releasing it.NIS2If exploitation causes a significant incident, essential and important entities owe their CSIRT an early warning within 24 hours and a notification within 72 hours.DORAFinancial entities must classify ICT incidents and send an initial notification for a major incident within strict deadlines, with exploited flaws a common cause.US federal (BOD 22-01)Federal civilian agencies had until 19 Apr 2024 to remediate. A sensible benchmark for everyone else.

General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.

Stay Ahead

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CVE-2026-0322Palo Alto Networks PAN-OS Code Injection VulnerabilityAdded 14 Oct 2026CVE-2026-0257 · RansomwarePalo Alto Networks PAN-OS Authentication Bypass VulnerabilityAdded 29 May 2026CVE-2026-0300Palo Alto Networks PAN-OS Out-of-bounds Write VulnerabilityAdded 6 May 2026CVE-2025-0111Palo Alto Networks PAN-OS File Read VulnerabilityAdded 20 Feb 2025CVE-2025-0108Palo Alto Networks PAN-OS Authentication Bypass VulnerabilityAdded 18 Feb 2025CVE-2024-3393Palo Alto Networks PAN-OS Malicious DNS Packet VulnerabilityAdded 30 Dec 2024

All 16 exploited Palo Alto Networks vulnerabilities

Not Sure If You Are Exposed?

Our attack surface and vulnerability teams can check your internet-facing estate for CVE-2024-3400 and every other exploited flaw on the list.

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Evidence

Sources

  1. CISA Known Exploited Vulnerabilities catalogue
  2. NVD: CVE-2024-3400
  3. CVE record: CVE-2024-3400
  4. FIRST EPSS
  5. security.paloaltonetworks.com/CVE-2024-3400
  6. unit42.paloaltonetworks.com/cve-2024-3400/
  7. volexity.com/blog/2024/04/12/zero-day-exploitation-of-unauthenticated-remote-code-execution-vulnerab
  8. paloaltonetworks.com/blog/2024/04/more-on-the-pan-os-cve/