PAN-OS: Buffer Overflow Vulnerabilities in User-ID Terminal Server Agent
Summary
| CVE | CVE-2026-0288 |
|---|---|
| State | PUBLISHED |
| Assigner | palo_alto |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-08 21:16:45 UTC |
| Updated | 2026-07-09 16:39:17 UTC |
| 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. |
Risk And Classification
Primary CVSS: v4.0 7.2 HIGH from [email protected]
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:D/RE:M/U:Red
Problem Types: CWE-787 | CWE-787 CWE-787 Out-of-bounds Write
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 7.2 | HIGH | 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/C... |
| 4.0 | CNA | CVSS | 7.2 | HIGH | 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/A... |
| 4.0 | CNA | CVSS | 5.2 | MEDIUM | CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:U/A... |
| 4.0 | CNA | CVSS | 4.8 | MEDIUM | CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:U/A... |
CVSS v4.0 Breakdown
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:D/RE:M/U:Red
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Palo Alto Networks | Cloud NGFW | unaffected All custom | AWS, Azure |
| CNA | Palo Alto Networks | PAN-OS | affected 12.1.0 12.1.8 custom | Not specified |
| CNA | Palo Alto Networks | PAN-OS | affected 11.2.0 11.2.13 custom | Not specified |
| CNA | Palo Alto Networks | PAN-OS | affected 11.1.0 11.1.16 custom | Not specified |
| CNA | Palo Alto Networks | PAN-OS | affected 10.2.0 10.2.7-h36 custom | Not specified |
| CNA | Palo Alto Networks | Prisma Access | affected 11.2.0 11.2.7-h18 custom | Not specified |
| CNA | Palo Alto Networks | Prisma Access | affected 10.2.0 10.2.10-h39 custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| security.paloaltonetworks.com/CVE-2026-0288 | [email protected] | security.paloaltonetworks.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Liang Zhu (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-07-08T16:00:00.000Z | Initial publication |
Solutions
CNA: 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 11.2.0 through 11.2.12 Upgrade to 11.2.13 or later. 11.2.0 through 11.2.10-h* Upgrade to 11.2.10-h12 or 11.2.13 or later. 11.2.0 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 11.1.0 through 11.1.15 Upgrade to 11.1.16 or later. 11.1.0 through 11.1.13-h* Upgrade to 11.1.13-h9 or 11.1.16 or later. 11.1.0 through 11.1.10-h* Upgrade to 11.1.10-h30 or 11.1.16 or later. 11.1.0 through 11.1.7-h* Upgrade to 11.1.7-h8 or 11.1.16 or later. 11.1.0 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 10.2.0 through 10.2.18-h* Upgrade to 10.2.18-h8 or later. 10.2.0 through 10.2.16-h* Upgrade to 10.2.16-h9 or later. 10.2.0 through 10.2.13-h* Upgrade to 10.2.13-h23 or later. 10.2.0 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.
Workarounds
CNA: The vast majority of firewalls already follow Palo Alto Networks' and industry best practices. However, if you have not already, we strongly recommend that you restrict your User-ID Terminal Server Agent connectivity to only trusted internal IP addresses according to our 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.)
Exploits
CNA: Palo Alto Networks is not aware of any malicious exploitation of these issues.