Answer in brief
CVE-2026-0288 records a High severity (CVSS 7.5) vulnerability in PAN-OS: Buffer Overflow Vulnerabilities in User-ID Terminal Server Agent. The current sources do not mark it as known exploited. The current feed maps Palo Alto Networks/PAN-OS (generic), Palo Alto Networks/Prisma Access (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Palo Alto Networks/PAN-OS (generic), Palo Alto Networks/Prisma Access (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Palo Alto Networks/PAN-OSgeneric | >=12.1.0 <12.1.8 || >=11.2.0 <11.2.13 || >=11.1.0 <11.1.16 || >=10.2.0 <10.2.7-h36 | 12.1.8, 11.2.13, 11.1.16, 10.2.7-h36 |
| Palo Alto Networks/Prisma Accessgeneric | >=11.2.0 <11.2.7-h18 || >=10.2.0 <10.2.10-h39 | 11.2.7-h18, 10.2.10-h39 |
Published upstream
Jul 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 8, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-0288 records a High severity (CVSS 7.5) vulnerability in PAN-OS: Buffer Overflow Vulnerabilities in User-ID Terminal Server Agent. The current sources do not mark it as known exploited. The current feed maps Palo Alto Networks/PAN-OS (generic), Palo Alto Networks/Prisma Access (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Palo Alto Networks/PAN-OS (generic), Palo Alto Networks/Prisma Access (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Palo Alto Networks/PAN-OSgeneric | >=12.1.0 <12.1.8 || >=11.2.0 <11.2.13 || >=11.1.0 <11.1.16 || >=10.2.0 <10.2.7-h36 | 12.1.8, 11.2.13, 11.1.16, 10.2.7-h36 |
| Palo Alto Networks/Prisma Accessgeneric | >=11.2.0 <11.2.7-h18 || >=10.2.0 <10.2.10-h39 | 11.2.7-h18, 10.2.10-h39 |
Published upstream
Jul 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 8, 2026
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.
Quoted source text, attributed separately from HOL analysis.