PAN-OS: Firewall Denial of Service (DoS) when GTP Security is Disabled
- Severity
- High7.5CVSS 3.1, High
- EPSS
- 0.91%
- Published
- 10 Apr 2024
- Updated
- 17 Jun 2026
Description
Title, description and vendor guidance are quoted from the source records.
A packet processing mechanism in Palo Alto Networks PAN-OS software enables a remote attacker to reboot hardware-based firewalls. Repeated attacks eventually cause the firewall to enter maintenance mode, which requires manual intervention to bring the firewall back online. This affects the following hardware firewall models: - PA-5400 Series firewalls - PA-7000 Series firewalls
Weakness: CWE-20, CWE-476
Known exploited
Not listed in CISA KEV as of the last check.
Exploit prediction
0.91% probability of exploitation in the next 30 days (percentile 58%).
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
What the source states, per branch
Versions matched by Patcharo
Palo Alto Networks PAN-OSSource: Palo Alto Networks (CVE record)
| Branch | Affected | Fixed in |
|---|---|---|
| 11.0 | >= 11.0.0, < 11.0.3 | 11.0.3 |
| 10.2 | >= 10.2.0, < 10.2.8 | 10.2.8 |
| 10.1 | >= 10.1.0, < 10.1.12 | 10.1.12 |
| 9.1 | >= 9.1.0, < 9.1.17 | 9.1.17 |
| 9.0 | >= 9.0.0, < 9.0.17-h4 | 9.0.17-h4 |
Versions not listed are stated unaffected by the vendor.
Workaround / Vendor remediation
Workaround · PAN-OS
Customers with a Threat Prevention subscription can block attacks for this vulnerability by enabling Threat ID 94993 (introduced in Applications and Threats content version 8832).
Vendor remediation · PAN-OS
This issue is fixed in PAN-OS 9.0.17-h4, PAN-OS 9.1.17, PAN-OS 10.1.12, PAN-OS 10.2.8, PAN-OS 11.0.3, and all later PAN-OS versions.
References
Provenance
Every fact on this page comes from the sources below. Nothing is written by an AI.
- Palo Alto Networks (CVE record)
- Palo Alto Networks (CVE record) · 27 Sept 2026, 23:46 UTC · Parser patcharo-cve5/1.1.0
- NVD
- NVD · 27 Sept 2026, 23:44 UTC · Parser patcharo-nvd/1.0.0
- FIRST EPSS
- FIRST EPSS · 27 Sept 2026, 23:46 UTC · Parser patcharo-epss/1.0.0
Last verified: 28 Sept 2026, 02:31 UTC