CVE-2021-31955

Windows Kernel Information Disclosure Vulnerability

Windows Kernel Information Disclosure Vulnerability

Affected

Microsoft · Windows 10 Version 1809 · Windows Server 2019 · Windows Server 2019 (Server Core installation) · Windows 10 Version 1909 · Windows 10 Version 21H1 · Windows 10 Version 2004

CVSS v3.1 NVD

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v2.0 NVD

2.1 LOWAV:L/AC:L/Au:N/C:P/I:N/A:N

EPSS

81.11% chance of exploitation in the next 30 days, 100th percentile

CISA KEV

added 2021-11-03

Published

2021-06-08

Updated

2025-10-21

Proof-of-concept exploits (2)

• freeide/CVE-2021-31955-POC12★ · 2021-06-26
• hoangprod/CVE-2021-31956-POC4★ · 2023-06-05

Security advisories

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955

References

• CVE Record
• NVD entry

Related

• CVE-2019-0708
• CVE-2019-2890
• CVE-2021-2394
• CVE-2021-29200
• CVE-2021-31956