# CVE-2026-0262: Palo Alto Networks PAN-OS denial of service in traffic parsing

Source: https://junglewise.ai/threats/cve-2026-0262-palo-alto-networks-pan-os-denial-of-service-in-traffic-parsing  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-13. Updated: 2026-06-09  
License: CC BY 4.0 with a link back

CVE-2026-0262 · Severity: info · CVSS 6.6 · Published 2026-05-13

Palo Alto Networks PAN-OS is the operating system used by corporate firewalls to secure network traffic. Multiple vulnerabilities allow an unauthenticated attacker to crash the firewall by sending specifically designed network traffic to its data interfaces. This results in a denial-of-service condition, potentially cutting off network connectivity or security protections for the organization.

Technologies: [Palo Alto Networks Prisma Access](https://junglewise.ai/threats/technologies/prisma-access), [Siemens RUGGEDCOM APE1808 Virtual NGFW](https://junglewise.ai/threats/technologies/ruggedcom-ape1808-virtual-ngfw). Vendors: [Palo Alto Networks](https://junglewise.ai/threats/vendors/palo-alto-networks), [Siemens](https://junglewise.ai/threats/vendors/siemens).

## Quick answers

**Is CVE-2026-0262 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-0262 being exploited in the wild.

**How severe is CVE-2026-0262?** Informational severity, with a CVSS score of 6.6, published 13 May 2026.

**Which products and versions are affected?** Palo Alto Networks Prisma Access 11.2.0 < 11.2.7-h13, 10.2.0 < 10.2.10-h36; Siemens RUGGEDCOM APE1808 Virtual NGFW All versions.

**Is there a fix for CVE-2026-0262?** A patch was published on 2026-05-15: Prisma Access upgraded for all customers Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-0262 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2026-0262?** Check whether you run Palo Alto Networks Prisma Access or Siemens RUGGEDCOM APE1808 Virtual NGFW 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.

## Technical details

The vulnerability is classified as an improper check for unusual or exceptional conditions (CWE-754) within the network traffic parsing component of PAN-OS. An unauthenticated attacker can exploit this by sending specially crafted network traffic to a dataplane interface. Successful exploitation results in a denial-of-service (DoS) condition. The issue affects various versions of PAN-OS 10.2, 11.1, 11.2, and 12.1, as well as Siemens RUGGEDCOM APE1808 devices running Virtual NGFW. Panorama, Cloud NGFW, and Prisma Access are not impacted. Patches are available in updated maintenance releases (e.g., 12.1.7, 11.2.12, 11.1.15, 10.2.18-h6).

## Affected products

- Palo Alto Networks PAN-OS 12.1 < 12.1.4-h5, 12.1 < 12.1.7, 11.2 < 11.2.4-h17, 11.2 < 11.2.7-h13, 11.2 < 11.2.10-h6, 11.2 < 11.2.12, 11.1 < 11.1.4-h33, 11.1 < 11.1.6-h32, 11.1 < 11.1.7-h6, 11.1 < 11.1.10-h25, 11.1 < 11.1.13-h5, 11.1 < 11.1.15, 10.2 < 10.2.7-h34, 10.2 < 10.2.10-h36, 10.2 < 10.2.13-h21, 10.2 < 10.2.16-h7, 10.2 < 10.2.18-h6
- Siemens RUGGEDCOM APE1808 Virtual NGFW All versions

## Timeline

- 2026-05-12: advisory: Initial Siemens advisory published
- 2026-05-13: advisory: Palo Alto Networks advisory published
- 2026-05-15: patched: Prisma Access upgraded for all customers
- 2026-05-28: other: Advisory updated by vendor

## References

- [https://security.paloaltonetworks.com/CVE-2026-0262](https://security.paloaltonetworks.com/CVE-2026-0262)
- [https://cert-portal.siemens.com/productcert/html/ssa-967325.html](https://cert-portal.siemens.com/productcert/html/ssa-967325.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 privilege escalation in GlobalProtect](https://junglewise.ai/threats/cve-2026-0327-a-privilege-escalation-vulnerability-in-the-globalprotect-gateway)
- [Palo Alto Networks PAN-OS GlobalProtect authorization bypass](https://junglewise.ai/threats/cve-2026-0325-an-authorization-bypass-vulnerability-in-the-globalprotect-gateway)
- [Palo Alto Networks PAN-OS GlobalProtect session hijacking](https://junglewise.ai/threats/cve-2026-0319-an-improper-input-handling-vulnerability-in-the-globalprotect)