PAN-OS: Denial of Service (DoS) in Tunnel Traffic Processing
Summary
| CVE | CVE-2026-0269 |
|---|---|
| State | PUBLISHED |
| Assigner | palo_alto |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-06-10 22:16:53 UTC |
| Updated | 2026-06-11 15:21:30 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v4.0 4.6 MEDIUM from [email protected]
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:A/V:D/RE:M/U:Amber
EPSS: 0.001820000 probability, percentile 0.079000000 (date 2026-06-17)
Problem Types: CWE-754 | CWE-754 CWE-754: Improper Check for Unusual or Exceptional Conditions
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 4.6 | MEDIUM | 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/C... |
| 4.0 | CNA | CVSS | 4.6 | MEDIUM | 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/A... |
CVSS v4.0 Breakdown
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:A/V:D/RE:M/U:Amber
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Palo Alto Networks | Cloud NGFW | unaffected All custom | Not specified |
| CNA | Palo Alto Networks | PAN-OS | affected 12.1.0 12.1.5 custom | Not specified |
| CNA | Palo Alto Networks | PAN-OS | affected 11.2.0 11.2.10 custom | Not specified |
| CNA | Palo Alto Networks | PAN-OS | affected 11.1.0 11.1.6-h21 custom | Not specified |
| CNA | Palo Alto Networks | PAN-OS | affected 10.2.0 10.2.16-h6 custom | Not specified |
| CNA | Palo Alto Networks | Panorama | unaffected All custom | Not specified |
| CNA | Palo Alto Networks | Prisma Access | unaffected All custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| security.paloaltonetworks.com/CVE-2026-0269 | [email protected] | security.paloaltonetworks.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-06-10T16:00:00.000Z | Initial publication. |
Solutions
CNA: VERSION MINOR VERSION SUGGESTED SOLUTION Cloud NGFW No action needed. PAN-OS 12.1 12.1.2 through 12.1.4-h* Upgrade to 12.1.4-h5 or 12.1.5 or later. PAN-OS 11.2 11.2.8 through 11.2.9 Upgrade to 11.2.10 or later. 11.2.5 through 11.2.7-h* Upgrade to 11.2.7-h4 or 11.2.10 or later. 11.2.0 through 11.2.4-h* Upgrade to 11.2.4-h17 or 11.2.10 or later. PAN-OS 11.1 11.1.11 or later Upgrade to 11.1.12 or later. 11.1.7 through 11.1.10-h* Upgrade to 11.1.10-h7 or 11.1.12 or later. 11.1.5 through 11.1.6-h* Upgrade to 11.1.6-h21 or 11.1.12 or later. 11.1.0 through 11.1.4-h* Upgrade to 11.1.4-h33 or 11.1.12 or later. PAN-OS 10.2 10.2.17 or later Upgrade to 10.2.18 or later. 10.2.4 through 10.2.16-h* Upgrade to 10.2.16-h6 or 10.2.18 or later. 10.2.11 through 10.2.13-h* Upgrade to 10.2.13-h21 or 10.2.18 or later. 10.2.8 through 10.2.10-h* Upgrade to 10.2.10-h36 or 10.2.18 or later. 10.2.0 through 10.2.7-h* Upgrade to 10.2.7-h34 or 10.2.18 or later. All older Upgrade to a supported fixed version. unsupported PAN-OS versions Panorama No action needed. Prisma Access No action needed.
Workarounds
CNA: No known workarounds exist for this issue.
Exploits
CNA: Palo Alto Networks is not aware of any malicious exploitation of this issue.