CVE-2026-0269 PAN-OS: Denial of Service (DoS) in Tunnel Traffic Processing
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.
Product Status
| Versions | Affected | Unaffected |
|---|---|---|
| Cloud NGFW | None | All |
| PAN-OS 12.1 | < 12.1.4-h5 < 12.1.5 | >= 12.1.4-h5 >= 12.1.5 |
| PAN-OS 11.2 | < 11.2.4-h17 < 11.2.7-h4 < 11.2.10 | >= 11.2.4-h17 >= 11.2.7-h4 >= 11.2.10 |
| PAN-OS 11.1 | < 11.1.4-h33 < 11.1.6-h21 < 11.1.10-h7 < 11.1.12 | >= 11.1.4-h33 >= 11.1.6-h21 >= 11.1.10-h7 >= 11.1.12 |
| PAN-OS 10.2 | < 10.2.7-h34 < 10.2.10-h36 < 10.2.13-h21 < 10.2.16-h6 < 10.2.18 | >= 10.2.7-h34 >= 10.2.10-h36 >= 10.2.13-h21 >= 10.2.16-h6 >= 10.2.18 |
| Panorama | None | All |
| Prisma Access | None | All |
Required Configuration for Exposure
This vulnerability affects PAN-OS firewalls configured with one or more of the following:
- IPSec Tunnels
- GlobalProtect Gateways (Remote Access)
Severity: MEDIUM, Suggested Urgency: MODERATE
CVSS-BT: 4.6 / CVSS-B: 6.9 (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)
Exploitation Status
Palo Alto Networks is not aware of any malicious exploitation of this issue.
Weakness Type and Impact
CWE-754: Improper Check for Unusual or Exceptional Conditions
CAPEC-153 Input Data Manipulation
Solution
| 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 unsupported PAN-OS versions | Upgrade to a supported fixed version. | |
| Panorama | No action needed. | |
| Prisma Access |
No action needed. |
Workarounds and Mitigations
No known workarounds exist for this issue.
CPEs
cpe:2.3:o:palo_alto_networks:pan-os:12.1.4:h3:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:12.1.4:h2:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:12.1.4:-:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:12.1.3:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:12.1.2:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:11.2.9:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:11.2.8:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:h3:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:h2:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:h1:*:*:*:*:*:*
CPE Applicability
- cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)12.1.0 and up to (excluding)12.1.5
- ORcpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)12.1.4 and up to (excluding)12.1.4-h5
- ORcpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)11.2.0 and up to (excluding)11.2.10
- ORcpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)11.2.7 and up to (excluding)11.2.7-h4
- ORcpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)11.2.4 and up to (excluding)11.2.4-h17
- ORcpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)11.1.0 and up to (excluding)11.1.12
- ORcpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)11.1.10 and up to (excluding)11.1.10-h7
- ORcpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)11.1.6 and up to (excluding)11.1.6-h21
- ORcpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)11.1.4 and up to (excluding)11.1.4-h33
- ORcpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)10.2.0 and up to (excluding)10.2.18
- ORcpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)10.2.16 and up to (excluding)10.2.16-h6
- ORcpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)10.2.13 and up to (excluding)10.2.13-h21
- ORcpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)10.2.10 and up to (excluding)10.2.10-h36
- ORcpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)10.2.7 and up to (excluding)10.2.7-h34