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Fencer Intel
high 7.5

CVE-2024-3384 json

PAN-OS: Firewall Denial of Service (DoS) via Malformed NTLM Packets

published 2y ago modified 4mo ago also EUVD-2024-31973

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

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.

Patch / fix

  • Palo Alto Networks PAN-OS 8.1.24, 9.0.17, 9.1.15-h1, 10.0.12, 10.1.0, 10.2.0, 11.0.0, 11.1.0

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2y ago

Exploit prediction

0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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 PAN-OS
  • Palo Alto Networks Cloud NGFW
  • Palo Alto Networks Prisma Access

Classification

Weakness
  • CWE-1286 Improper Validation of Syntactic Correctness of Input
Technology feeds

References

Sources

Fencer Intel 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.