CVE-2021-3038: medium-severity vulnerability in Palo Alto Networks GlobalProtect App
GlobalProtect App: Windows VPN kernel driver denial of service (DoS)
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.5epss 0.2%
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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
Palo Alto Networks · GlobalProtect AppRelated CVEs — Palo Alto Networks GlobalProtect App
In the same product, most dangerous first.
CVE-2024-5921MEDIUMGlobalProtect App: Insufficient Certificate Validation Leads to Privilege EscalationEPSS 1.5%CVE-2021-3057HIGHGlobalProtect App: Buffer Overflow Vulnerability When Connecting to Portal or GatewayEPSS 1.4%CVE-2020-2033MEDIUMGlobalProtect App: Missing certificate validation vulnerability can disclose pre-logon authentication cookieEPSS 0.9%CVE-2022-0018MEDIUMGlobalProtect App: Information Exposure Vulnerability When Connecting to GlobalProtect Portal With Single Sign-On EnabledEPSS 0.7%CVE-2026-0298MEDIUMGlobalProtect App: Code Execution Vulnerability in Windows Pre-Logon Access Provider (PLAP)EPSS 0.7%CVE-2026-0297MEDIUMGlobalProtect App: Buffer Overflow Vulnerability during UDP Tunnel HandshakeEPSS 0.6%