Buffer overflow in Palo Alto Networks Cloud Ngfw
CVE-2026-0288
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.
Vulnerability class: Buffer Overflow
EPSS: 0.010 (58.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Palo Alto Networks Cloud Ngfw — versions All
- Palo Alto Networks Pan-os — versions 12.1.0, 11.2.0, 11.1.0
- Palo Alto Networks Prisma Access — versions 11.2.0, 10.2.0
- Paloaltonetworks Pan-os — versions 10.2.7, 10.2.10, 10.2.13
Weakness classification (CWE)
References
- psirt@paloaltonetworks.com (vendor-advisory)
- psirt@paloaltonetworks.com (Vendor Advisory)
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Frequently asked questions
- What is CVE-2026-0288?
- CVE-2026-0288 is a high-severity vulnerability in Palo Alto Networks Cloud Ngfw, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2026-07-08.
- How severe is CVE-2026-0288?
- High severity. CVSS v3 base score is 7.5 out of 10.