CVE-2021-3038 json
GlobalProtect App: Windows VPN kernel driver denial of service (DoS)
published 2021-04-20 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-26390
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 12%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Palo Alto Networks GlobalProtect App 5.1.8, 5.2.4
Exploit prediction
0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.9 | AV:L/AC:L/Au:N/C:N/I:N/A:C |
Affected products
- Palo Alto Networks GlobalProtect App
Classification
References
-
security.paloaltonetworks.com
/CVE-2021-3038
vendor-advisory
Sources
- CVE List CVE-2021-3038
- NVD CVE-2021-3038
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