CVE-2026-0269: A memory corruption vulnerability in the processing of tunnel traffic in Palo Alto Networks PAN-OS® software a

Q: How do I fix CVE-2026-0269?

pan-os: upgrade to 10.2.7, 10.2.10, 10.2.13, 10.2.16, 11.1.4, 11.1.6, 11.1.10, 11.2.4, 11.2.7, 11.2.10, 12.1.4. Exact commands for each OS are on this page.

Q: Is CVE-2026-0269 being exploited?

CVE-2026-0269 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-0269 affect?

CVE-2026-0269 affects pan-os. Severity is medium (CVSS 5.7). 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

Q: How urgent is CVE-2026-0269?

Priority 23/100. No elevated risk signals yet.

Routine

MEDIUM 5.7UPGRADE

CVE-2026-0269 is a medium-severity flaw (CVSS 5.7) affecting pan-os. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.7 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 87%)
CISA exploited list	No
Weakness	CWE-754
Published	2026-06-10
Last modified	2026-07-23

Publisher (CNA): Palo Alto Networks, Inc. · Vendor: paloaltonetworks

Last updated 2026-07-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-10 22:16 UTCPublished CVE record published
2026-07-23 09:10 UTCUpdated Record last modified

paloaltonetworks pan-os UPGRADE

Affected: >= 10.2.0 and < 10.2.7 · >= 10.2.8 and < 10.2.10 · >= 10.2.11 and < 10.2.13 · >= 10.2.14 and < 10.2.16 · 10.2.7 · 10.2.7 h1 · 10.2.7 h10 · 10.2.7 h11

Fixed in: 10.2.7, 10.2.10, 10.2.13, 10.2.16, 11.1.4, 11.1.6, 11.1.10, 11.2.4, 11.2.7, 11.2.10, 12.1.4

Safe to downgrade to: a release before 10.2.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-0269?

pan-os: upgrade to 10.2.7, 10.2.10, 10.2.13, 10.2.16, 11.1.4, 11.1.6, 11.1.10, 11.2.4, 11.2.7, 11.2.10, 12.1.4. Exact commands for each OS are on this page.

Is CVE-2026-0269 being exploited?

CVE-2026-0269 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-0269 affect?

CVE-2026-0269 affects pan-os. Severity is medium (CVSS 5.7). 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

How urgent is CVE-2026-0269?

Priority 23/100. No elevated risk signals yet.

Software pages

Palo Alto PAN-OS vulnerabilities

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References

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