CVE-2024-3393
Confirmed PUBLISHEDPAN-OS: Firewall Denial of Service (DoS) in DNS Security Using a Specially Crafted Packet
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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.
- CVE Published
- Dec 27, 2024
- Exploitation Reported
- Dec 30, 2024
- CVSS
- 8.7 High
- EPSS
- —
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| Palo Alto Networks |
Cloud NGFW
|
All |
Unaffected |
| Palo Alto Networks |
PAN-OS
|
11.2.0 to < 11.2.3 Changed to unaffected at 11.2.3 |
Affected |
| Palo Alto Networks |
PAN-OS
|
11.1.0 to < 11.1.2-h16 Changed to unaffected at 11.1.2-h16 Changed to unaffected at 11.1.3-h13 Changed to unaffected at 11.1.4-h7 Changed to unaffected at 11.1.5 |
Affected |
| Palo Alto Networks |
PAN-OS
|
10.2.8 to < 10.2.8-h19 Changed to unaffected at 10.2.8-h19 Changed to unaffected at 10.2.9-h19 Changed to unaffected at 10.2.10-h12 Changed to unaffected at 10.2.11-h10 Changed to unaffected at 10.2.12-h4 Changed to unaffected at 10.2.13-h2 Changed to unaffected at 10.2.14 |
Affected |
| Palo Alto Networks |
PAN-OS
|
10.1.14 to < 10.1.14-h8 Changed to unaffected at 10.1.14-h8 Changed to unaffected at 10.1.15 |
Affected |
| Palo Alto Networks |
PAN-OS
|
10.2.0 to < 10.2.8 Changed to affected at 10.2.8 Changed to unaffected at 10.2.9-h19 Changed to unaffected at 10.2.10-h12 |
Unaffected |
| Palo Alto Networks |
PAN-OS
|
11.2.0 to < 11.2.3 Changed to unaffected at 11.2.3 |
Affected |
CVE References
- Vendor Advisory — security.paloaltonetworks.com security.paloaltonetworks.com · Vendor Advisory https://security.paloaltonetworks.com/CVE-2024-3393
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2024-12-30 00:00 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
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
Exploitation Status
Exploited in the wild
Recorded 2024-12-30 00:00:00 UTC · CISA
Proof of concept available
Recorded 2025-01-04 08:18:06 UTC · GitHub
Weaknesses (CWE)
-
Improper Check for Unusual or Exceptional Conditions
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Nessus | https://www.tenable.com/plugins/nessus/213409 | Jun 02, 2025 |
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
09:25 UTC about 1 year ago09:25 UTC · about 1 year ago
Nessus plugin available
Scanner coverage available
-
08:18 UTC over 1 year ago08:18 UTC · over 1 year ago
Public PoC available
Public proof-of-concept code published
-
00:00 UTC over 1 year ago00:00 UTC · over 1 year ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
09:44 UTC over 1 year ago09:44 UTC · over 1 year ago
CVE published
Vulnerability disclosed publicly
-
17:40 UTC over 2 years ago17:40 UTC · over 2 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2024-3393
{
"cve_id": "CVE-2024-3393",
"title": "PAN-OS: Firewall Denial of Service (DoS) in DNS Security Using a Specially Cr...",
"affected_vendor": "Palo Alto Networks",
"affected_product": "Cloud NGFW, PAN-OS",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 8.7,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}