CVE-2021-3038

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

MEDIUM

5.5

CVSS Score

Published: April 20, 2021 at 03:15 AM UTC

Updated: June 17, 2026 at 04:04 AM UTC

1 product affected across 1 vendorGlobalProtect

Using GlobalProtect App by Palo Alto Networks?

Get instant alerts when new vulnerabilities affect GlobalProtect App - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

GlobalProtect · Palo Alto Networks

95%

5.1 ≤ v < 5.1.85.1.0 ≤ v < 5.1.85.2 ≤ v < 5.2.45.2.0 ≤ v < 5.2.45.1 5.2

Affected range stops below 5.1.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.2.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://security.paloaltonetworks.com/CVE-2021-3038

References (1)

x_refsource_MISCVendor Advisory

Source: [email protected]

https://security.paloaltonetworks.com/CVE-2021-3038

CVSS

5.5MEDIUMpalo_alto

Attack Vector: LOCAL
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-20CWE-248NVD-CWE-noinfo

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create account Sign in

Free plan, no card