# CVE-2026-0317: Palo Alto Networks PAN-OS denial of service in API request handler

Source: https://junglewise.ai/threats/cve-2026-0317-a-denial-of-service-vulnerability-in-palo-alto-networks-pan-os  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-14. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-0317 · Severity: info · Published 2026-10-14

A denial of service vulnerability in Palo Alto Networks PAN-OS affects the management API of next-generation firewalls. An authenticated read-only administrator can crash the device by sending a specially crafted API request, disrupting network traffic processing. The risk is significantly reduced by restricting management access to trusted internal IP addresses.

Technologies: [Palo Alto Networks PAN-OS](https://junglewise.ai/threats/technologies/pan-os). Vendors: [Palo Alto Networks](https://junglewise.ai/threats/vendors/palo-alto-networks).

## Quick answers

**Is CVE-2026-0317 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-0317 being exploited in the wild.

**How severe is CVE-2026-0317?** Informational severity, published 14 October 2026.

**Which products and versions are affected?** Palo Alto Networks PAN-OS 12.2.0 through 12.2.3; 12.1.2 through 12.1.10; 11.2.0 through 11.2.15; 11.1.0 through 11.1.16.

**Is there a fix for CVE-2026-0317?** Yes: fixed in PAN-OS 12.2.4, 12.1.10-h2, 11.2.16, 11.1.16-h3. Until then: Restrict access to the management web interface to only trusted internal IP addresses according to Palo Alto Networks' recommended best practice deployment guidelines. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-0317 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-0317?** Check whether you run Palo Alto Networks PAN-OS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in PAN-OS 12.2.4, 12.1.10-h2, 11.2.16, 11.1.16-h3

Restrict access to the management web interface to only trusted internal IP addresses according to Palo Alto Networks' recommended best practice deployment guidelines.

## Technical details

A denial of service vulnerability (CWE-754: Improper Check for Unusual or Exceptional Conditions) in PAN-OS management API requires network access and high privileges (read-only administrator role) to exploit via specially crafted API requests. An attacker with authenticated read-only admin access can crash the device, causing temporary outages. Fixes are available in PAN-OS 12.2.4, 12.1.10-h2, 11.2.16, and 11.1.16-h3.

## Affected products

- Palo Alto Networks PAN-OS 12.2.0 through 12.2.3; 12.1.2 through 12.1.10; 11.2.0 through 11.2.15; 11.1.0 through 11.1.16

## Timeline

- 2026-10-14: disclosed

## References

- [https://security.paloaltonetworks.com/CVE-2026-0317](https://security.paloaltonetworks.com/CVE-2026-0317)
- [https://cert-portal.siemens.com/productcert/html/ssa-104023.html](https://cert-portal.siemens.com/productcert/html/ssa-104023.html)

## Related threats

- [Palo Alto Networks PAN-OS information disclosure via dataplane interface](https://junglewise.ai/threats/cve-2026-0331-an-information-disclosure-vulnerability-in-palo-alto-networks-pan)
- [Palo Alto Networks PAN-OS buffer overflow denial of service](https://junglewise.ai/threats/cve-2026-0329-a-buffer-overflow-vulnerability-in-palo-alto-networks-pan-os)
- [Palo Alto Networks PAN-OS authentication bypass in GlobalProtect](https://junglewise.ai/threats/cve-2026-0328-authentication-bypass-vulnerabilities-in-the-globalprotect-portal)
- [Palo Alto Networks PAN-OS privilege escalation in GlobalProtect](https://junglewise.ai/threats/cve-2026-0327-a-privilege-escalation-vulnerability-in-the-globalprotect-gateway)
- [Palo Alto Networks PAN-OS buffer overflow in protocol and service processing](https://junglewise.ai/threats/cve-2026-0326-a-buffer-overflow-vulnerability-in-palo-alto-networks-pan-os)