CVE-2026-0288
Last modified
CVE-2026-0288 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.84% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Paloaltonetworks | Pan-Os | >= 10.2.0, < 10.2.7 | — |
| Paloaltonetworks | Pan-Os | >= 10.2.8, < 10.2.10 | — |
| Paloaltonetworks | Pan-Os | >= 10.2.11, < 10.2.13 | — |
| Paloaltonetworks | Pan-Os | >= 10.2.14, < 10.2.16 | — |
| Paloaltonetworks | Pan-Os | 10.2.7 | — |
| Paloaltonetworks | Pan-Os | 10.2.10 | — |
| Paloaltonetworks | Pan-Os | 10.2.13 | — |
| Paloaltonetworks | Pan-Os | 10.2.16 | — |
| Paloaltonetworks | Pan-Os | 10.2.17 | — |
| Paloaltonetworks | Pan-Os | 10.2.18 | H1 |
| Paloaltonetworks | Pan-Os | >= 11.1.0, < 11.1.4 | — |
| Paloaltonetworks | Pan-Os | >= 11.1.8, < 11.1.10 | — |
| Paloaltonetworks | Pan-Os | >= 11.1.11, < 11.1.13 | — |
| Paloaltonetworks | Pan-Os | >= 11.1.14, < 11.1.16 | — |
| Paloaltonetworks | Pan-Os | 11.1.4 | — |
| Paloaltonetworks | Pan-Os | 11.1.5 | — |
| Paloaltonetworks | Pan-Os | 11.1.6 | — |
| Paloaltonetworks | Pan-Os | 11.1.10 | — |
| Paloaltonetworks | Pan-Os | 11.1.13 | — |
| Paloaltonetworks | Pan-Os | >= 11.2.0, < 11.2.4 | — |
| Paloaltonetworks | Pan-Os | >= 11.2.5, < 11.2.7 | — |
| Paloaltonetworks | Pan-Os | >= 11.2.8, < 11.2.10 | — |
| Paloaltonetworks | Pan-Os | >= 11.2.11, < 11.2.13 | — |
| Paloaltonetworks | Pan-Os | 11.2.4 | — |
| Paloaltonetworks | Pan-Os | 11.2.7 | — |
| Paloaltonetworks | Pan-Os | 11.2.10 | — |
| Paloaltonetworks | Pan-Os | >= 12.1.2, < 12.1.4 | — |
| Paloaltonetworks | Pan-Os | >= 12.1.5, < 12.1.7 | — |
| Paloaltonetworks | Pan-Os | 12.1.4 | — |
| Paloaltonetworks | Pan-Os | 12.1.7 | — |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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