CVEvulnerability

CVE-2021-31955

5.5 MEDIUM Known exploited Published 2021-06-08 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Microsoft Windows Kernel Information Disclosure Vulnerability — Microsoft Windows

Microsoft Windows Kernel contains an unspecified vulnerability that allows for information disclosure. Successful exploitation allows attackers to read the contents of kernel memory from a user-mode process.

Added to KEV
2021-11-03
Remediation due
2021-11-17
Ransomware use
Unknown
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-31955
Status
Analyzed
Published
2021-06-08
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
2.1 LOW — AV:L/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-497

Description

Windows Kernel Information Disclosure Vulnerability

Affected configurations

• microsoft windows 10 1809 (< 10.0.17763.1999) • microsoft windows 10 1909 (< 10.0.18363.1621) • microsoft windows 10 2004 (< 10.0.19041.1052) • microsoft windows 10 20h2 (< 10.0.19042.1052) • microsoft windows 10 21h1 (< 10.0.19043.1052) • microsoft windows server 2004 (< 10.0.19041.1052) • microsoft windows server 2019 (< 10.0.17763.1999) • microsoft windows server 20h2 (< 10.0.19042.1052)

Related

Weakness · CWE (1)

  • CWE-497 Exposure of Sensitive System Information to an Unauthorized Control Sphere weakness

References