CVE-2021-3038 - CVE House
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Status published Medium CVE-2021-3038

GlobalProtect App: Windows VPN kernel driver denial of service (DoS)

Vulnerability Description

A denial-of-service (DoS) vulnerability in Palo Alto Networks GlobalProtect app on Windows systems allows a limited Windows user to send specifically-crafted input to the GlobalProtect app that results in a Windows blue screen of death (BSOD) error. This issue impacts: GlobalProtect app 5.1 versions earlier than GlobalProtect app 5.1.8; GlobalProtect app 5.2 versions earlier than GlobalProtect app 5.2.4.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Palo Alto Networks thanks Christophe Schleypen from NCIA / NCIRC for discovering and reporting this issue.

References

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Affected Vendor

Palo Alto Networks

View all reports →

Affected Software

GlobalProtect App
Vulnerable Versions:
5.1, 5.2

Timeline

Official Publish: April 20th, 2021
Last Modified: September 16th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-20 CWE-248

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1059 Command and Scripting Interpreter
Execution
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1213 Data from Information Repositories
Collection
T1565.002 Stored Data Manipulation
Impact
T1203 Exploitation for Client Execution
Execution
T1499.003 Application Exhaustion Flood
Impact