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PatchSiren cyber security CVE debrief

CVE-2026-0269 Palo Alto Networks CVE debrief

CVE-2026-0269 is a memory corruption vulnerability in Palo Alto Networks PAN-OS software. An authenticated user can initiate system reboots using a maliciously crafted packet. Repeated attempts to initiate a reboot causes the firewall to enter maintenance mode. This vulnerability has a CVSS score of 4.6 and is classified as MEDIUM severity. Panorama, Cloud NGFW, and Prisma Access are not impacted by this vulnerability.

Vendor
Palo Alto Networks
Product
Cloud NGFW
CVSS
MEDIUM 4.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-10
Original CVE updated
2026-07-14
Advisory published
2026-06-10
Advisory updated
2026-07-14

Who should care

Users of Palo Alto Networks PAN-OS software should be aware of this vulnerability and take necessary precautions to prevent exploitation.

Technical summary

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.

Defensive priority

MEDIUM

Recommended defensive actions

  • Apply patches or updates provided by Palo Alto Networks to fix the vulnerability.
  • Restrict access to the affected systems to prevent authenticated users from exploiting the vulnerability.
  • Monitor system logs for suspicious activity.

Evidence notes

The CVE record was published on 2026-06-10T22:16:53.573Z and modified on 2026-06-11T15:21:30.653Z. The vulnerability has a CVSS score of 4.6 and is classified as MEDIUM severity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-0269 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-0269

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-0269 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-0269

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.