CVEs / CVE-2024-3393
CVE-2024-3393: Palo Alto Networks PAN-OS Malicious DNS Packet Vulnerability
- Known exploited in the CISA KEV catalog since 30 Dec 2024
- high 7.5 CVSS 3.1 (NVD)
- EPSS 29.1% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Palo Alto Networks PAN-OS contains a vulnerability in parsing and logging malicious DNS packets in the DNS Security feature that, when exploited, allows an unauthenticated attacker to remotely reboot the firewall. Repeated attempts to trigger this condition will cause the firewall to enter maintenance mode.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Palo Alto Networks PAN-OS | from 11.2.0, before 11.2.3 | 11.2.3 |
| Palo Alto Networks PAN-OS | from 11.1.0, before 11.1.2-h16 | 11.1.2-h16 |
| Palo Alto Networks PAN-OS | from 10.2.8, before 10.2.8-h19 | 10.2.8-h19 |
| Palo Alto Networks PAN-OS | from 10.1.14, before 10.1.14-h8 | 10.1.14-h8 |
Exploitation
| In CISA KEV since | 30 Dec 2024 |
|---|---|
| Due date for US federal agencies | 20 Jan 2025 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. |
Severity
| CVSS 3.1 | 7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HScored by NVD |
|---|---|
| Weakness | CWE-754 |
References
- CVE-2024-3393 on NVD
- CVE-2024-3393 in the CISA KEV catalog
- https://security.paloaltonetworks.com/CVE-2024-3393 (cited by CISA)
- https://security.paloaltonetworks.com/CVE-2024-3393 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-3393 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.