CVE-2021-31979
Microsoft Windows Kernel Privilege Escalation Vulnerability
CVSS
7.8
High
EPSS
4.5%
p91
KEV
YES
Nov 3, 2021
Exploit Today
77
0-100
Published: Jul 14, 2021 · Last modified: Aug 10, 2026 · CWE-119
4.5%EPSS · 30 days4.5%
2026-09-172026-10-15
Product
Microsoft / Windows
Vulnerability
Microsoft Windows Kernel Privilege Escalation Vulnerability
Added to KEV
Nov 3, 2021
Remediate by
Nov 17, 2021
Known ransomware use
No
Summary description
Microsoft Windows kernel contains an unspecified vulnerability that allows for privilege escalation.
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-31979
Windows Kernel Elevation of Privilege Vulnerability
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-110920——
———Memory corruption in V8 in Google Chrome prior to 155.0.8059.84 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)4hCVE-2026-110918——
———Memory corruption in Core in Google Chrome prior to 155.0.8059.84 allowed a remote attacker to read memory via a crafted HTML page. (Chromium security severity: High)4hCVE-2026-110917——
———Memory corruption in SVG in Google Chrome prior to 155.0.8059.84 allowed a remote attacker to read memory via a crafted HTML page. (Chromium security severity: High)4hCVE-2026-110914——
———Memory corruption in Workers in Google Chrome prior to 155.0.8059.84 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)4hCVE-2026-110913——
———Memory corruption in DOM in Google Chrome prior to 155.0.8059.84 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)4hCVE-2026-454508.3 HIG—
——0: Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Unitronics Unitronics UniStream Pro/UniLogic.
This issue affects Unitronics UniStream Pro/UniLogic: Unitronics UniStream Pro versions only (B10 / C10) – UniLogic versions prior to 1.41.329.7h