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Vulnerability · Published Jul 8, 2026 · Assigned by palo_alto

CVE-2026-0288PAN-OS: Buffer Overflow Vulnerabilities in User-ID Terminal Server Agent

High 7.2

In plain English

A high-severity out-of-bounds write in Cloud NGFW from Palo Alto Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities).

Severity (CVSS 4.0)7.2High
Exploit odds (30 days)0.8%top 42.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

VendorProductVersions
Palo Alto Networks Cloud NGFW see references
Palo Alto Networks PAN-OS 12.1.0 – before 12.1.811.2.0 – before 11.2.1311.1.0 – before 11.1.1610.2.0 – before 10.2.7-h36
Palo Alto Networks Prisma Access 11.2.0 – before 11.2.7-h1810.2.0 – before 10.2.10-h39

Weakness: CWE-787 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:U/AU:N/R:U/V:D/RE:M/U:Red

References