Vulnerability Intelligence Report
PAN-OS: Firewall Denial of Service (DoS) in DNS Security Using a Specially Crafted Packet
CVE-2024-3393
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.
CISA KEV
SSVC: Active Exploitation
Automatable
CVSS Base Score
8.7
HIGH
EPSS Probability:26.64%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-754 ↗CWE-754 Improper Check for Unusual or Exceptional Conditions
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Palo Alto Networks | Cloud NGFW | All (unaffected) |
| Palo Alto Networks | PAN-OS | 11.2.0 < 11.2.3 (affected), 11.1.0 < 11.1.2-h16 (affected), 10.2.8 < 10.2.8-h19 (affected), 10.1.14 < 10.1.14-h8 (affected) |
| Palo Alto Networks | PAN-OS | 10.2.0 < 10.2.8 (unaffected), 11.2.0 < 11.2.3 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Palo Alto Networks, Inc. · Vendor · USA |
| Reserved | 2024-04-05T17:40:24 |
| Published | 2024-12-27T09:44:24 |
| Patch Date | 2024-12-27 |
| Last Updated | 2025-10-21T22:55:33 |
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