HIGHCVSS 7.0Actively exploited · CISA KEV since 2026-08-11Vulnerability

CVE-2026-68820

Microsoft Windows Ancillary Function Driver for WinSock contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally.

Properties

Euvd product
Windows 11 Version 24H2, Windows Server 2022, Windows Server 2012 R2, Windows 10 Version 22H2, Windows Server 2012, Windows Server 2025 (Server Core installation), Windows 10 Version 21H2, Windows Server 2016 (Server Core installation), Windows Server 2019 (Server Core installation), Windows 11 Version 25H2, Windows Server 2016, Windows Server 2019, Windows 10 Version 1809, Windows Server 2012 R2 (Server Core installation), Windows Server 2012 (Server Core installation), Windows Server 2025, Windows 10 Version 1607, Windows 11 Version 23H2, Windows 11 version 26H1
Vulnerability name
Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability
First seen
2026-10-08T18:11:35+00:00
Cvss score
7
Epss score
0.00332
Last seen
2026-10-19T12:00:27+00:00
Due date
2026-08-25
Euvd assigner
microsoft
Retrieved at
2026-10-21T01:24:50+00:00
Exploited euvd since
2026-08-11T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2026-08-11
Score
7
Euvd base score version
3.1
Fetched at
2026-10-20T10:36:20+00:00
Euvd vendor
Microsoft
Cvss vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
7

Related Entities (21)

AFFECTS_PRODUCT (16)

→[Product]cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
→[Product]cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*
→[Product]cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:*

MENTIONED_IN (2)

→[Campaign]State Sponsored Hackers Use Fake Job Offers to Deliver New Zero Day Exploit
→[Campaign]Shattering the Dream - When a Job Offer Becomes a Zero-Day Attack

DESCRIBES (1)

←[KEVEntry]Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability

HAS_WEAKNESS (1)

→[Weakness]Use After Free

INVOLVES (1)

←[Signal]kev_added · 2026-08-11

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CVE-2026-68820 (CVSS 7) — Ninja Signal Threat Intelligence | Ninja Signal