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Fencer Vulns
high 7.5

CVE-2024-3393 kev in the critical feed json

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

published 2024-12-27 22 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-31982

cvss
7.5
version 3.1, NVD
cisa kev
Exploited
added 2024-12-30
epss
29.1%
EPSS 29.1% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

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.

Patch / fix

cisa required action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  • Palo Alto Networks PAN-OS 10.1.14-h8, 10.1.15, 10.2.8-h19, 10.2.9-h19, 10.2.10-h12, 10.2.11-h10, 10.2.12-h4, 10.2.13-h2, 10.2.14, 11.1.2-h16, 11.1.3-h13, 11.1.4-h7, 11.1.5, 11.2.3

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-24-338-02 updated cvss 7.5

Siemens RUGGEDCOM APE1808

  • Siemens RUGGEDCOM APE1808
    affected: vendor fix, mitigation

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Timeline

  1. Published
  2. Added to CISA KEV
  3. CISA SSVC: exploitation active
  4. CISA patch deadline

Known exploited

Added
22 mo ago
Patch by
2025-01-20 (21 mo ago)
Ransomware
Not known
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vendor, product
Palo Alto Networks, PAN-OS
CISA name
Palo Alto Networks PAN-OS Malicious DNS Packet Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
partial
Assessed
21 mo ago

Exploit prediction

29.12% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:N/R:U/V:C/RE:M/U:Amber
CNA 4.0 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:N/R:U/V:C/RE:M/U:Amber
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:C/RE:M/U:Amber
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Palo Alto Networks Cloud NGFW
  • Palo Alto Networks PAN-OS

Classification

Weakness
  • CWE-754 Improper Check for Unusual or Exceptional Conditions
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.