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

Published Jun 10, 2026
·
Updated

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.

Affected Software

139 affected componentsFixes available
Palo Alto Networks PAN-OS
Palo Alto Networks Cloud NGFW
Palo Alto Networks PAN-OS<12.1.5, =12.1.0, <11.2.10, =11.2.0, <11.1.6-h21, =11.1.0, <10.2.16-h6, =10.2.0
12.1.512.1.4-h511.2.1011.2.7-h411.2.4-h1711.1.1211.1.10-h711.1.6-h2111.1.4-h3310.2.1810.2.16-h610.2.13-h2110.2.10-h3610.2.7-h34
Palo Alto Networks Panorama
Palo Alto Networks Prisma Access
Palo Alto Networks PAN-OS>=10.2.0<10.2.7
Palo Alto Networks PAN-OS>=10.2.8<10.2.10
Palo Alto Networks PAN-OS>=10.2.11<10.2.13
Palo Alto Networks PAN-OS>=10.2.14<10.2.16
Palo Alto Networks PAN-OS=10.2.7
Palo Alto Networks PAN-OS=10.2.7-h1
Palo Alto Networks PAN-OS=10.2.7-h10
Palo Alto Networks PAN-OS=10.2.7-h11
Palo Alto Networks PAN-OS=10.2.7-h12
Palo Alto Networks PAN-OS=10.2.7-h13
Palo Alto Networks PAN-OS=10.2.7-h14
Palo Alto Networks PAN-OS=10.2.7-h15
Palo Alto Networks PAN-OS=10.2.7-h16
Palo Alto Networks PAN-OS=10.2.7-h17
Palo Alto Networks PAN-OS=10.2.7-h18
Palo Alto Networks PAN-OS=10.2.7-h19
Palo Alto Networks PAN-OS=10.2.7-h2
Palo Alto Networks PAN-OS=10.2.7-h20
Palo Alto Networks PAN-OS=10.2.7-h21
Palo Alto Networks PAN-OS=10.2.7-h22
Palo Alto Networks PAN-OS=10.2.7-h23
Palo Alto Networks PAN-OS=10.2.7-h24
Palo Alto Networks PAN-OS=10.2.7-h3
Palo Alto Networks PAN-OS=10.2.7-h32
Palo Alto Networks PAN-OS=10.2.7-h34
Palo Alto Networks PAN-OS=10.2.7-h35
Palo Alto Networks PAN-OS=10.2.7-h4
Palo Alto Networks PAN-OS=10.2.7-h5
Palo Alto Networks PAN-OS=10.2.7-h6
Palo Alto Networks PAN-OS=10.2.7-h7
Palo Alto Networks PAN-OS=10.2.7-h8
Palo Alto Networks PAN-OS=10.2.7-h9
Palo Alto Networks PAN-OS=10.2.10
Palo Alto Networks PAN-OS=10.2.10-h1
Palo Alto Networks PAN-OS=10.2.10-h10
Palo Alto Networks PAN-OS=10.2.10-h11
Palo Alto Networks PAN-OS=10.2.10-h12
Palo Alto Networks PAN-OS=10.2.10-h13
Palo Alto Networks PAN-OS=10.2.10-h14
Palo Alto Networks PAN-OS=10.2.10-h17
Palo Alto Networks PAN-OS=10.2.10-h18
Palo Alto Networks PAN-OS=10.2.10-h2
Palo Alto Networks PAN-OS=10.2.10-h21
Palo Alto Networks PAN-OS=10.2.10-h27
Palo Alto Networks PAN-OS=10.2.10-h3
Palo Alto Networks PAN-OS=10.2.10-h30
Palo Alto Networks PAN-OS=10.2.10-h31
Palo Alto Networks PAN-OS=10.2.10-h4
Palo Alto Networks PAN-OS=10.2.10-h5
Palo Alto Networks PAN-OS=10.2.10-h6
Palo Alto Networks PAN-OS=10.2.10-h7
Palo Alto Networks PAN-OS=10.2.13
Palo Alto Networks PAN-OS=10.2.13-h1
Palo Alto Networks PAN-OS=10.2.13-h10
Palo Alto Networks PAN-OS=10.2.13-h15
Palo Alto Networks PAN-OS=10.2.13-h16
Palo Alto Networks PAN-OS=10.2.13-h18
Palo Alto Networks PAN-OS=10.2.13-h2
Palo Alto Networks PAN-OS=10.2.13-h3
Palo Alto Networks PAN-OS=10.2.13-h4
Palo Alto Networks PAN-OS=10.2.13-h5
Palo Alto Networks PAN-OS=10.2.13-h7
Palo Alto Networks PAN-OS=10.2.16
Palo Alto Networks PAN-OS=10.2.16-h1
Palo Alto Networks PAN-OS=10.2.16-h4
Palo Alto Networks PAN-OS=10.2.17
Palo Alto Networks PAN-OS>=11.1.0<11.1.4
Palo Alto Networks PAN-OS>=11.1.5<11.1.6
Palo Alto Networks PAN-OS>=11.1.7<11.1.10
Palo Alto Networks PAN-OS=11.1.4
Palo Alto Networks PAN-OS=11.1.4-h1
Palo Alto Networks PAN-OS=11.1.4-h10
Palo Alto Networks PAN-OS=11.1.4-h11
Palo Alto Networks PAN-OS=11.1.4-h12
Palo Alto Networks PAN-OS=11.1.4-h13
Palo Alto Networks PAN-OS=11.1.4-h15
Palo Alto Networks PAN-OS=11.1.4-h17
Palo Alto Networks PAN-OS=11.1.4-h18
Palo Alto Networks PAN-OS=11.1.4-h2
Palo Alto Networks PAN-OS=11.1.4-h25
Palo Alto Networks PAN-OS=11.1.4-h27
Palo Alto Networks PAN-OS=11.1.4-h3
Palo Alto Networks PAN-OS=11.1.4-h32
Palo Alto Networks PAN-OS=11.1.4-h4
Palo Alto Networks PAN-OS=11.1.4-h5
Palo Alto Networks PAN-OS=11.1.4-h6
Palo Alto Networks PAN-OS=11.1.4-h7
Palo Alto Networks PAN-OS=11.1.4-h8
Palo Alto Networks PAN-OS=11.1.4-h9
Palo Alto Networks PAN-OS=11.1.6
Palo Alto Networks PAN-OS=11.1.6-h1
Palo Alto Networks PAN-OS=11.1.6-h10
Palo Alto Networks PAN-OS=11.1.6-h14
Palo Alto Networks PAN-OS=11.1.6-h17
Palo Alto Networks PAN-OS=11.1.6-h18
Palo Alto Networks PAN-OS=11.1.6-h19
Palo Alto Networks PAN-OS=11.1.6-h2
Palo Alto Networks PAN-OS=11.1.6-h20
Palo Alto Networks PAN-OS=11.1.6-h3
Palo Alto Networks PAN-OS=11.1.6-h4
Palo Alto Networks PAN-OS=11.1.6-h6
Palo Alto Networks PAN-OS=11.1.6-h7
Palo Alto Networks PAN-OS=11.1.10
Palo Alto Networks PAN-OS=11.1.10-h1
Palo Alto Networks PAN-OS=11.1.10-h4
Palo Alto Networks PAN-OS=11.1.10-h5
Palo Alto Networks PAN-OS=11.1.11
Palo Alto Networks PAN-OS>=11.2.0<11.2.4
Palo Alto Networks PAN-OS>=11.2.5<11.2.7
Palo Alto Networks PAN-OS>=11.2.8<11.2.10
Palo Alto Networks PAN-OS=11.2.4
Palo Alto Networks PAN-OS=11.2.4-h1
Palo Alto Networks PAN-OS=11.2.4-h10
Palo Alto Networks PAN-OS=11.2.4-h11
Palo Alto Networks PAN-OS=11.2.4-h12
Palo Alto Networks PAN-OS=11.2.4-h14
Palo Alto Networks PAN-OS=11.2.4-h15
Palo Alto Networks PAN-OS=11.2.4-h17
Palo Alto Networks PAN-OS=11.2.4-h2
Palo Alto Networks PAN-OS=11.2.4-h3
Palo Alto Networks PAN-OS=11.2.4-h4
Palo Alto Networks PAN-OS=11.2.4-h5
Palo Alto Networks PAN-OS=11.2.4-h6
Palo Alto Networks PAN-OS=11.2.4-h7
Palo Alto Networks PAN-OS=11.2.4-h8
Palo Alto Networks PAN-OS=11.2.4-h9
Palo Alto Networks PAN-OS=11.2.7
Palo Alto Networks PAN-OS=11.2.7-h1
Palo Alto Networks PAN-OS=11.2.7-h2
Palo Alto Networks PAN-OS=11.2.7-h3
Palo Alto Networks PAN-OS>=12.1.0<12.1.4
Palo Alto Networks PAN-OS=12.1.4
Palo Alto Networks PAN-OS=12.1.4-h2
Palo Alto Networks PAN-OS=12.1.4-h3

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 12.1.5Fixed in 12.1.4-h5Fixed in 11.2.10Fixed in 11.2.7-h4Fixed in 11.2.4-h17Fixed in 11.1.12Fixed in 11.1.10-h7Fixed in 11.1.6-h21Fixed in 11.1.4-h33Fixed in 10.2.18Fixed in 10.2.16-h6Fixed in 10.2.13-h21Fixed in 10.2.10-h36Fixed in 10.2.7-h34
  2. Upgrade

    Upgrade Palo Alto Networks PAN-OS to a version that resolves this vulnerability.

    Fixed in 10.2.18
  3. Upgrade

    Upgrade Palo Alto Networks PAN-OS to a version that resolves this vulnerability.

    Fixed in 11.1.12
  4. Upgrade

    Upgrade Palo Alto Networks PAN-OS to a version that resolves this vulnerability.

    Fixed in 11.2.10
  5. Upgrade

    Upgrade Palo Alto Networks PAN-OS to a version that resolves this vulnerability.

    Fixed in 12.1.5

Event History

Jun 10, 2026
Advisory Published
via Palo Alto Networks·04:00 PM
Data Sourced
via Palo Alto Networks·04:00 PM
RemedyDescriptionSeverityWeaknessAffected Software
CVE Published
via MITRE·08:54 PM
Data Sourced
via MITRE·08:54 PM
DescriptionWeakness
Data Sourced
via NVD·10:16 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-0269?

CVE-2026-0269 has a medium severity rating of 6.9 on the CVSS scale.

2

How do I fix CVE-2026-0269?

To fix CVE-2026-0269, upgrade to PAN-OS version 12.1.4-h5 or later, or 11.2.10 or later depending on your current version.

3

What causes CVE-2026-0269?

CVE-2026-0269 is caused by a memory corruption vulnerability in the processing of tunnel traffic within Palo Alto Networks PAN-OS.

4

Who is affected by CVE-2026-0269?

CVE-2026-0269 affects users of Palo Alto Networks PAN-OS, Cloud NGFW, Panorama, and Prisma Access.

5

What happens if CVE-2026-0269 is exploited?

If exploited, CVE-2026-0269 allows an authenticated user to initiate system reboots, potentially causing the firewall to enter maintenance mode.

Company

Resources

Contact

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