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The vulnerability of the Windows operating system’s kernel, which allows a hacker to increase their privileges

🗓️ 16 Feb 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec
 bdu_fstec🔗 bdu.fstec.ru👁 1 Views

A Windows kernel vulnerability from shared resources synchronization errors enables privilege escalation.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-21231
10 Feb 202617:51
–attackerkb
Information Security Automation		February Microsoft Patch Tuesday
11 Feb 202611:08
–avleonov
Circl		CVE-2026-21231
10 Feb 202617:30
–circl
CNNVD		Microsoft Windows Kernel 竞争条件问题漏洞
10 Feb 202600:00
–cnnvd
CNVD		Microsoft Windows Kernel Competitive Conditions Vulnerability
2 Mar 202600:00
–cnvd
CVE		CVE-2026-21231
10 Feb 202617:51
–cve
Cvelist		CVE-2026-21231 Windows Kernel Elevation of Privilege Vulnerability
10 Feb 202617:51
–cvelist
Japan Vulnerability Notes		Security information for Hitachi Disk Array Systems
31 Mar 202606:53
–jvn
Microsoft KB		February 10, 2026—KB5075897 (OS Build 25398.2149)
10 Feb 202616:00
–mskb
Microsoft KB		February 10, 2026—KB5075899 (OS Build 26100.32370)
10 Feb 202616:00
–mskb
Rows per page
Vulners
Node
microsoftwindows_11_26h1Range<10.0.28000.1575
OR
microsoftwindows_server_2012_r2_(server_core_installation)Range<6.3.9600.23022
OR
microsoftwindows_server_2012_r2Range<6.3.9600.23022
OR
microsoftwindows_server_2012_(server_core_installation)Range<6.2.9200.25923
OR
microsoftwindows_server_2012Range<6.2.9200.25923
OR
microsoftwindows_server_2016_(server_core_installation)Range<10.0.14393.8868
OR
microsoftwindows_server_2016Range<10.0.14393.8868
OR
microsoftwindows_10_1607Range<10.0.14393.8868
OR
microsoftwindows_server_2025Range<10.0.26100.32370
OR
microsoftwindows_server_2025Range<10.0.26100.32313
OR
microsoftwindows_11_24h2Range<10.0.26100.7840
OR
microsoftwindows_11_24h2Range<10.0.26100.7781
OR
microsoftwindows_server_2022,_23h2_edition_(server_core_installation)Range<10.0.25398.2149
OR
microsoftwindows_11_23h2Range<10.0.22631.6649
OR
microsoftwindows_server_2025_(server_core_installation)Range<10.0.26100.32370
OR
microsoftwindows_server_2025_(server_core_installation)Range<10.0.26100.32313
OR
microsoftwindows_10_22h2Range<10.0.19045.6937
OR
microsoftwindows_10_21h2Range<10.0.19044.6937
OR
microsoftwindows_server_2022_(server_core_installation)Range<10.0.20348.4773
OR
microsoftwindows_server_2022_(server_core_installation)Range<10.0.20348.4711
OR
microsoftwindows_server_2022Range<10.0.20348.4773
OR
microsoftwindows_server_2022Range<10.0.20348.4711
OR
microsoftwindows_server_2019_(server_core_installation)Range<10.0.17763.8389
OR
microsoftwindows_server_2019Range<10.0.17763.8389
OR
microsoftwindows_10_1809Range<10.0.17763.8389
OR
microsoftwindows_11_25h2Range<10.0.26100.7840
OR
microsoftwindows_11_25h2Range<10.0.26100.7781

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16 Feb 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 26
CVSS 37.8
EPSS0.02432
Windows kernelshared resourcessynchronization errorsprivilege escalation
1