CVE-2026-0288 release notes and known issues

PAN-OS: Buffer Overflow Vulnerabilities in User-ID Terminal Server Agent

Scope: Cloud NGFW. This update record adds version, fix and known-issue context. Its publication date is not a lifecycle boundary.

Summary

Multiple buffer overflow vulnerabilities in the User-ID Terminal Server Agent (TSA) component of Palo Alto Networks PAN-OS software allow an unauthenticated attacker with network access to cause a denial of service (DoS) condition or potentially execute arbitrary code by sending specially crafted network traffic. The security risk posed by this issue is minimized when the User-ID Terminal Server Agent connectivity is restricted to only trusted internal IP addresses according to our recommended best practice deployment guidelines (https://docs.paloaltonetworks.com/ngfw/help/10-2/user-identification/device-user-identification-terminal-services-agents#:~:text=To%20minimize%20security%20risk%2C%20restrict%20TS%20Agent%20connectivity%20to%20trusted%20internal%20IP%20addresses%20only.). Panorama is not impacted by this vulnerability.

Known issues

Publisher statement

Not stated. The verified publisher record does not contain a known-issues statement.

Affected products and versions

Products

Cloud NGFW
PAN-OS
Prisma Access

Affected versions

None on AWS, None on Azure
< 12.1.4-h8, < 12.1.7-h2, < 12.1.8
< 11.2.4-h20, < 11.2.7-h18, < 11.2.10-h12, < 11.2.13
< 11.1.4-h35, < 11.1.6-h35, < 11.1.7-h8, < 11.1.10-h30, < 11.1.13-h9, < 11.1.16
< 10.2.7-h36, < 10.2.10-h39, < 10.2.13-h23, < 10.2.16-h9, < 10.2.18-h8
< 11.2.7-h18*
< 10.2.10-h39*

Fixed versions or updates

All on AWS, All on Azure unless you have been contacted by Palo Alto Networks
>= 12.1.4-h8, >= 12.1.7-h2, >= 12.1.8
>= 11.2.4-h20, >= 11.2.7-h18, >= 11.2.10-h12, >= 11.2.13
>= 11.1.4-h35, >= 11.1.6-h35, >= 11.1.7-h8, >= 11.1.10-h30, >= 11.1.13-h9, >= 11.1.16
>= 10.2.7-h36, >= 10.2.10-h39, >= 10.2.13-h23, >= 10.2.16-h9, >= 10.2.18-h8
>= 11.2.7-h18*
>= 10.2.10-h39*

Recommended action

VERSION MINOR VERSION SUGGESTED SOLUTION Cloud NGFW No action needed. PAN-OS 12.1 12.1.5 through 12.1.7-h* Upgrade to 12.1.7-h2 or 12.1.8 or later. 12.1.2 through 12.1.4-h* Upgrade to 12.1.4-h8 or 12.1.8 or later. PAN-OS 11.2 11.2.11 through 11.2.12 Upgrade to 11.2.13 or later. 11.2.8 through 11.2.10-h* Upgrade to 11.2.10-h12 or 11.2.13 or later. 11.2.5 through 11.2.7-h* Upgrade to 11.2.7-h18 or 11.2.13 or later. 11.2.0 through 11.2.4-h* Upgrade to 11.2.4-h20 or 11.2.13 or later. PAN-OS 11.1 11.1.14 through 11.1.15 Upgrade to 11.1.16 or later. 11.1.11 through 11.1.13-h* Upgrade to 11.1.13-h9 or 11.1.16 or later. 11.1.8 through 11.1.10-h* Upgrade to 11.1.10-h30 or 11.1.16 or later. 11.1.7 through 11.1.7-h* Upgrade to 11.1.7-h8 or 11.1.16 or later. 11.1.5 through 11.1.6-h* Upgrade to 11.1.6-h35 or 11.1.16 or later. 11.1.0 through 11.1.4-h* Upgrade to 11.1.4-h35 or 11.1.16 or later. PAN-OS 10.2 10.2.17 through 10.2.18-h* Upgrade to 10.2.18-h8 or later. 10.2.14 through 10.2.16-h* Upgrade to 10.2.16-h9 or later. 10.2.11 through 10.2.13-h* Upgrade to 10.2.13-h23 or later. 10.2.8 through 10.2.10-h* Upgrade to 10.2.10-h39 or later. 10.2.0 through 10.2.7-h* Upgrade to 10.2.7-h36 or later. All older Upgrade to a supported fixed version. unsupported PAN-OS versions Prisma Access 11.2 11.2.0 through 11.2.7 Upgrade to 11.2.7-h18 or later.* Prisma Access 10.2 10.2.0 through 10.2.10 Upgrade to 10.2.10-h39 or later.* * See the note under Product Status for information regarding Prisma Access upgrades.

Related vulnerabilities

BlackTree CVE Intelligence

CVE-2026-0288Open CVE report →

Official publisher evidence

PALO ALTO NETWORKSVERIFIED

PAN-OS: Buffer Overflow Vulnerabilities in User-ID Terminal Server Agent

Checked 9 Oct 2026. BlackTree preserves the last verified facts if a later source check is temporarily unavailable.

Open the official publisher source