CVE-2024-3393
HighExploitedPublic exploitA 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.
Published Dec 27, 2024 · Updated Nov 4, 2025
Key Facts
Patch immediately- CVE-2024-3393 is a high-severity vulnerability (CVSS 8.7 v4) affecting Prisma Access (Paloaltonetworks), PAN-OS (Paloaltonetworks), Cloud NGFW.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Dec 27, 2024. Public exploit code is available.
- EPSS estimates a 29% probability of exploitation in the next 30 days.
- Fixed versions are available, including PAN-OS <=11.1.1, PAN-OS 10.1.14-h8, PAN-OS 10.2.8-h19.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v4
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
EPSS (30-day exploit likelihood)
29%
Higher than 98.1% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2024-3393 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Dec 30, 2024 | Jan 20, 2025 | Not reported |
| Industry KEV feed | Dec 27, 2024 | Jan 20, 2025 | Not reported |
| CIRCL KEV | Dec 30, 2024 | Jan 20, 2025 | Not reported |
| ENISA EUVD | Dec 30, 2024 | n/a | Not reported |
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Affected Products
99 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Prisma AccessPaloaltonetworks | See advisory | n/a |
| PAN-OSPaloaltonetworks | 10.1.14, 10.1.14-h2, 10.1.14-h4, 10.1.14-h6, 10.2.10, 10.2.10-h10, 10.2.10-h2, 10.2.10-h3 | 11.1.1 |
| Cloud NGFW | See advisory | n/a |
Patched Releases
PAN-OS
<=11.1.1, 10.1.14-h8, 10.2.8-h19, 11.1.2-h16, 11.2.3
Timeline
Publicly disclosed
Dec 27, 2024
Added to Industry KEV feed
Dec 27, 2024
Added to CISA KEV
Dec 30, 2024
Added to CIRCL KEV
Dec 30, 2024
Added to ENISA EUVD
Dec 30, 2024
Last updated
Nov 4, 2025
Weakness Type
- CWE-754 Improper Check for Unusual or Exceptional Conditions
References
FAQ
Common Questions.
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.
Affected: Prisma Access (Paloaltonetworks); PAN-OS (Paloaltonetworks) versions 10.1.14, 10.1.14-h2, 10.1.14-h4, 10.1.14-h6, 10.2.10, 10.2.10-h10, 10.2.10-h2, 10.2.10-h3; Cloud NGFW. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Dec 27, 2024.
Yes. It was added on Dec 30, 2024 with a federal remediation due date of Jan 20, 2025.
Public exploit code is available.
Fixed versions are available, including PAN-OS <=11.1.1, PAN-OS 10.1.14-h8, PAN-OS 10.2.8-h19.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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