Medium 4.6Published Jun 10, 2026

CVE-2026-0269PAN-OS: Denial of Service (DoS) in Tunnel Traffic Processing

Updated under an hour ago (Oct 26, 2026, 7:00 PM ET)

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It affects Palo Alto Networks Cloud NGFW and 5 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Palo Alto Networks Cloud NGFW

Exploited in the last 30 days

A memory corruption vulnerability in the processing of tunnel traffic in Palo Alto Networks PAN-OS® software allows an authenticated user to initiate system reboots using a maliciously crafted packet. Repeated attempts to initiate a reboot causes the firewall to enter maintenance mode. Panorama, Cloud NGFW, and Prisma® Access are not impacted by this vulnerability.

CVSS: 4.6 MEDIUM (v4.0, CNA)CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:A/V:D/RE:M/U:Amber
Weakness (CWE): CWE-754
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: palo_alto
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

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 palo_alto_networks:pan-os	from 12.1.0 before 12.1.5; fixed at 12.1.5, fixed at 12.1.4-h5; from 11.2.0 before 11.2.10; fixed at 11.2.10, fixed at 11.2.7-h4, fixed at 11.2.4-h17; from 11.1.0 before 11.1.6-h21; fixed at 11.1.12, fixed at 11.1.10-h7, fixed at 11.1.6-h21, fixed at 11.1.4-h33; from 10.2.0 before 10.2.16-h6; fixed at 10.2.18, fixed at 10.2.16-h6, fixed at 10.2.13-h21, fixed at 10.2.10-h36, fixed at 10.2.7-h34	CNA record
Palo Alto Networks Panorama palo_alto_networks:panorama (from the name)	all versions not affected	CNA record
Palo Alto Networks Prisma Access palo_alto_networks:prisma_access (from the name)	all versions not affected	CNA record
Siemens RUGGEDCOM APE1808 siemens:ruggedcom_ape1808 (from the name)	all versions	CISA ADP
paloaltonetworks pan-os paloaltonetworks:pan-os	from 10.2.0 before 10.2.7; from 10.2.8 before 10.2.10; from 10.2.11 before 10.2.13; from 10.2.14 before 10.2.16; 10.2.7; 10.2.7; 10.2.7; 10.2.7; and 126 more ranges	NVD

References

References

https://security.paloaltonetworks.com/CVE-2026-0269	vendor-advisory
https://cert-portal.siemens.com/productcert/html/ssa-967325.html

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.