CVE-2024-3393PAN-OS: Firewall Denial of Service (DoS) in DNS Security Using a Specially Crafted Packet
Updated under an hour ago ()
Does this affect you?
It affects Palo Alto Networks Cloud NGFW and 3 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Dec 30, 2024; federal agencies had to remediate by Jan 20, 2025. Treat that date as your deadline.
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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.
- CVSS
- 8.7 HIGH (v4.0, CNA)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
- Weakness (CWE)
- CWE-754
- Known exploited
- Added to CISA KEV Dec 30, 2024; federal remediation due Jan 20, 2025Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 29.12% (percentile 98)
- Assigned by
- palo_alto
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Palo Alto Networks Cloud NGFW palo_alto_networks:cloud_ngfw (from the name) | all versions not affected | CNA record |
Palo Alto Networks PAN-OS paloaltonetworks:pan-os | from 11.2.0 before 11.2.3; fixed at 11.2.3; from 11.1.0 before 11.1.2-h16; fixed at 11.1.2-h16, fixed at 11.1.3-h13, fixed at 11.1.4-h7, fixed at 11.1.5; from 10.2.8 before 10.2.8-h19; fixed at 10.2.8-h19, fixed at 10.2.9-h19, fixed at 10.2.10-h12, fixed at 10.2.11-h10, fixed at 10.2.12-h4, fixed at 10.2.13-h2, fixed at 10.2.14; from 10.1.14 before 10.1.14-h8; fixed at 10.1.14-h8, fixed at 10.1.15 | CNA record |
Palo Alto Networks PAN-OS palo_alto_networks:pan_os (from the name) | from 10.2.0 before 10.2.8 not affected; affected at 10.2.8, fixed at 10.2.9-h19, fixed at 10.2.10-h12; from 11.2.0 before 11.2.3; fixed at 11.2.3 | CNA record |
paloaltonetworks pan-os paloaltonetworks:pan-os | from 11.1.0 through 11.1.1; from 11.2.0 before 11.2.3; 10.1.14; 10.1.14; 10.1.14; 10.1.14; 10.2.8; 10.2.8; and 51 more ranges | NVD |
paloaltonetworks prisma_access paloaltonetworks:prisma_access | all versions | NVD |
References
- https://security.paloaltonetworks.com/CVE-2024-3393vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-3393us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.