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CVE-2026-20809

🗓️ 13 Jan 2026 18:16:07Reported by [email protected]Type 
nvd
 nvd
🔗 web.nvd.nist.gov👁 11 Views

CVE-2026-20809: Toctou race in Windows kernel memory enables local privilege escalation by an authorized attacker.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-20809
13 Jan 202617:56
–attackerkb
bdu_fstec
BDU FSTEC
Windows Kernel Memory Privilege Escalation
16 Jan 202600:00
–bdu_fstec
circl
Circl
CVE-2026-20809
13 Jan 202618:01
–circl
cnnvd
CNNVD
Microsoft Windows Kernel 安全漏洞
13 Jan 202600:00
–cnnvd
cve
CVE
CVE-2026-20809
13 Jan 202617:56
–cve
cvelist
Cvelist
CVE-2026-20809 Windows Kernel Memory Elevation of Privilege Vulnerability
13 Jan 202617:56
–cvelist
euvd
EUVD
EUVD-2026-2204
13 Jan 202617:56
–euvd
jvn
Japan Vulnerability Notes
Security information for Hitachi Disk Array Systems
20 Feb 202609:35
–jvn
mskb
Microsoft KB
January 13, 2026—KB5073379 (OS Build 26100.32230)
13 Jan 202616:00
–mskb
mskb
Microsoft KB
January 13, 2026—KB5073450 (OS Build 25398.2092)
13 Jan 202616:00
–mskb
Rows per page
NVD
Node
OR
microsoftwindows_10_1607Range<10.0.14393.8783x64
microsoftwindows_10_1607Range<10.0.14393.8783x86
microsoftwindows_10_1809Range<10.0.17763.8276x64
microsoftwindows_10_1809Range<10.0.17763.8276x86
microsoftwindows_10_21h2Range<10.0.19044.6809
microsoftwindows_10_22h2Range<10.0.19045.6809
microsoftwindows_11_23h2Range<10.0.22631.6491
microsoftwindows_11_24h2Range<10.0.26100.7623
microsoftwindows_11_25h2Range<10.0.26200.7623
microsoftwindows_server_2016Range<10.0.14393.8783
microsoftwindows_server_2019Range<10.0.17763.8276
microsoftwindows_server_2022Range<10.0.20348.4648
microsoftwindows_server_2025Range<10.0.26100.32230

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30 Jul 2026 21:16Current
CVSS 3.17.8
EPSS0.00359
SSVC
11