Dashboard / CVE-2026-70307

CVE-2026-70307

HIGH
MEDIUM Priority: 0.02 BB Relevance: 29/100
Published: 2026-08-11 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: High
PR: Low
UI: None
S: Unchanged
C: High
I: High
A: High

Description

Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

Weakness Classification (1)

Affected Software (25)

VendorProductVersion
Microsoft Windows 10 Version 1607 10.0.14393.0 < 10.0.14393.9418
microsoft windows_10_1607 < 10.0.14393.9418
microsoft windows_10_1607 < 10.0.14393.9418
microsoft windows_10_1809 < 10.0.17763.9115
microsoft windows_10_1809 < 10.0.17763.9115
microsoft windows_10_21h2 < 10.0.19044.7663
microsoft windows_10_21h2 < 10.0.19044.7663
microsoft windows_10_21h2 < 10.0.19044.7663
microsoft windows_10_22h2 < 10.0.19045.7663
microsoft windows_10_22h2 < 10.0.19045.7663
microsoft windows_10_22h2 < 10.0.19045.7663
microsoft windows_11_23h2 < 10.0.22631.7517
microsoft windows_11_23h2 < 10.0.22631.7517
microsoft windows_11_24h2 < 10.0.26100.9106
microsoft windows_11_24h2 < 10.0.26100.9106
microsoft windows_11_25h2 < 10.0.26200.9106
microsoft windows_11_25h2 < 10.0.26200.9106
microsoft windows_11_26h1 < 10.0.28000.2704
microsoft windows_11_26h1 < 10.0.28000.2704
microsoft windows_server_2012 -
microsoft windows_server_2012 r2
microsoft windows_server_2016 < 10.0.14393.9418
microsoft windows_server_2019 < 10.0.17763.9115
microsoft windows_server_2022 < 10.0.20348.5440
microsoft windows_server_2025 < 10.0.26100.33222

References & Advisories (1)

Bug Bounty Relevance

29 / 100
✓ No user interaction

CVSS Score

7.0 / 10.0 v3.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

EPSS — Exploitation Probability

0.26%
Raw Score 0.002640
Percentile 18.3%
Date 2026-10-30

EPSS Trend

2026-10-30
0.00264
2026-10-29
0.00264
2026-10-28
0.00264

Intelligence Sources

mitre ref →

External Links