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CVE-2024-3384 — PAN-OS: Firewall Denial of Service (DoS) via Malformed NTLM Packets

CVE-2024-3384 · PAN-OS · CVSS 7.5

In brief

Severity · CVSS
High7.5CVSS 3.1, High
EPSS
0.89%
CISA KEV
Not listed
CERT-FR
No advisory or alert referenced in the catalog
Products
PAN-OS
Published · Modified
·
Last verified

Summary

A vulnerability in Palo Alto Networks PAN-OS software enables a remote attacker to reboot PAN-OS firewalls when receiving Windows New Technology LAN Manager (NTLM) packets from Windows servers. Repeated attacks eventually cause the firewall to enter maintenance mode, which requires manual intervention to bring the firewall back online.

Weakness: CWE-1286

Title, description and the vendor's statements are quoted from the CVE record; a vendor's advisory is summarised in Patcharo's words, with a link.

Affected and fixed versions

Per product and release branch, as the vendor's CVE record and official advisory state them. A fixed release is shown only when a document names it: the vendor's, or CERT-FR's for Check Point, with its source.

4 branches with a published fixed release

Palo Alto Networks PAN-OS

Source: CVE-2024-3384

  1. 11.1Approaching end of support
    Affected versionsNot affected
    First fixed release—
  2. 11.0End of life
    Affected versionsNot affected
    First fixed release—
  3. 10.2End of life
    Affected versionsNot affected
    First fixed release—
  4. 10.1End of life
    Affected versionsNot affected
    First fixed release—
  5. 10.0End of life
    Affected versions>= 10.0.0, < 10.0.12
    First fixed release10.0.12
  6. 9.1End of life
    Affected versions>= 9.1.0, < 9.1.15-h1
    First fixed release9.1.15-h1
  7. 9.0End of life
    Affected versions>= 9.0.0, < 9.0.17
    First fixed release9.0.17
  8. 8.1End of life
    Affected versions>= 8.1.0, < 8.1.24
    First fixed release8.1.24

Releases the vendor does not list are not affected.

Remediation

Fix available

Vendor fix

  • PAN-OS 10.010.0.12
  • PAN-OS 9.19.1.15-h1
  • PAN-OS 9.09.0.17
  • PAN-OS 8.18.1.24

Upgrade to a fixed release listed above for your branch, or to a later fixed release the vendor explicitly supports.

This issue is fixed in PAN-OS 8.1.24, PAN-OS 9.0.17, PAN-OS 9.1.15-h1, PAN-OS 10.0.12, and all later PAN-OS versions.

SourcePalo Alto Networks (CVE record)

Vendor advisory

Sourcehttps://security.paloaltonetworks.com/CVE-2024-3384

Last verified 1 Oct 2026 at 13:37 UTC

Known exploitation

Not listed in CISA KEV as of the last check.

0.89% probability of exploitation in the next 30 days (percentile 58%).

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

CERT-FR

No CERT-FR advisory or alert of the last two years references this CVE, for the vendors Patcharo covers.

Timeline

  1. Published by the source
  2. Source record last modified
  3. EPSS score computed
  4. Last verified by Patcharo

Official sources

References

Palo Alto Networks · NVD · FIRST EPSS

How Patcharo reads this

Affected and fixed releases come from the vendor's structured statements and are matched against exact versions; CVSS from NVD, exploitation from CISA KEV and the vendor's own advisory, probability from FIRST EPSS. Missing data stays Unknown and never becomes Not affected.

Read the methodologyRead the guide: PAN-OS versions explained: release lines, maintenance releases and the -h1, -h2, -h3 suffixes

Related vulnerabilities

Other records affecting the same products, newest first.

  • CVE-2026-0301PAN-OS: Information Disclosure Vulnerability in URL FilteringHigh
  • CVE-2026-0280PAN-OS: IPv6 Firewall Policy BypassHigh
  • CVE-2026-0281PAN-OS: Information Disclosure Vulnerability in Management Web InterfaceHigh
  • CVE-2026-0283PAN-OS: Authentication Bypass Vulnerability in Large Scale VPN (LSVPN)High
  • CVE-2026-0284PAN-OS: XML Injection Vulnerability in Large Scale VPN (LSVPN)Critical

All PAN-OS vulnerabilitiesAll Palo Alto Networks vulnerabilities