High severity · published Jul 8, 2026
CVE-2026-0288
PAN-OS: Buffer Overflow Vulnerabilities in User-ID Terminal Server Agent
7.5
CVSS
0.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 57% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PA
PAN-OS · Palo Alto Networks
12.1.0 before 12.1.8; 11.2.0 before 11.2.13; 11.1.0 before 11.1.16; 10.2.0 before 10.2.7-h36 · source: vendor, NVD
CN
Cloud NGFW · Palo Alto Networks
All versions, or not specified · source: vendor
PA
Prisma Access · Palo Alto Networks
11.2.0 before 11.2.7-h18; 10.2.0 before 10.2.10-h39 · source: vendor
RA
RUGGEDCOM APE1808 · Siemens
0 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-0288
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-0288
Vendor Advisory
https://security.paloaltonetworks.com/
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-104023.html
More from PAN-OS
10.0
CVE-2024-3400
PAN-OS: Arbitrary File Creation Leads to OS Command Injection Vulnerability in GlobalProtect
10.0
CVE-2020-2021
PAN-OS: Authentication Bypass in SAML Authentication
9.8
CVE-2026-109618
RCE via OOM corruption
9.8
CVE-2026-0300
PAN-OS: Unauthenticated user initiated Buffer Overflow Vulnerability in User-ID™ Authentication Portal
9.8
CVE-2024-0012
PAN-OS: Authentication Bypass in the Management Web Interface (PAN-SA-2024-0015)
