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CVE-2024-3393

PAN-OS: Firewall Denial of Service (DoS) in DNS Security Using a Specially Crafted Packet

Exploited in the wild. In CISA KEV since 2024‑12‑30. Fixed versions are out.

CVSS 3.17.5HighEPSS percentile98th29% chance in 30 daysCISA KEVListedsince 2024-12-30, due 2025-01-20
Public exploit: 0 sourcesFix4 products5 fixed builds listed below

Published Updated Sources: CVE.org, NVD, BDU, CSAF

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Palo Alto Networks PAN-OSAffected: ≥ 11.2.0, < 11.2.3Upgrade to: 11.2.3Affected: ≥ 11.1.0, < 11.1.2-h16Upgrade to: 11.1.2-h16Affected: ≥ 10.2.8, < 10.2.8-h19Upgrade to: 10.2.8-h19Affected: ≥ 10.1.14, < 10.1.14-h8Upgrade to: 10.1.14-h8Stated by: CVE record
  • Palo Alto Networks Cloud NGFWFixed buildsAllStated by: CVE record
  • Paloaltonetworks Pan-osAffected: ≥ 11.1.0, ≤ 11.1.1Upgrade to: after 11.1.1Stated by: NVD
  • Palo Alto Networks Inc. Prisma AccessAffected: до 10.2.8Upgrade to: not statedStated by: BDU

Versions as the sources state them. Full version matrix after sign-in

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

Coverage timeline

0 publishers

  1. Added to CISA KEV catalog

    ·CISA KEV

Sourced from public security reporting — each date is when it was published, not when it happened.

What it is

From the CVE record

A Denial of Service vulnerability in the DNS Security feature of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to send a malicious packet through the data plane of the firewall that reboots the firewall. Repeated attempts to trigger this condition will cause the firewall to enter maintenance mode.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS98th
Public exploit
CISA KEV
CISA KEV

Listed as exploited in the wild since 2024-12-30.

US federal agencies must remediate by 2025-01-20.

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Public exploits

0 sources with a proof of concept or module.

Exploit links, PoCs and Metasploit modules after sign-in
EPSS

29% chance of exploitation activity in the next 30 days, which ranks it in the 98th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

8 events over 545 days, from the signal feeds we watch.

  1. OpenVAS check added
  2. EPSS band changehigh → moderate
  3. Patch availableworkaround available, record updated
  4. Added to CISA KEV
  5. Publishedweakness classified

Affected products

And 2 more affected products. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

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

Scored 7.5 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required NoneNo authentication required — anyone can exploit this
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality NoneNo confidentiality impact
  • Integrity NoneNo integrity impact
  • Availability HighTotal denial of service — the component is completely unavailable

Weaknesses

Sources

References in the record

And 9 more references. See all after sign-in

Watch the software you run.

My Stack ranks new CVEs for your products by real-world exploitation, so the next exploited one reaches you without reading every advisory.

We'll flag the next CVE, public exploit or patch for PAN-OS, not every advisory. This one: actively exploited.