PULSEUnderground Intel

LIVE23signals / 24h

FEED

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CVE WatchAug 11, 2026

CVE-2026-70307

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

CVSS

7.0

High

EPSS

—

KEV

—

Exploit Today

—

0-100

Published: Aug 11, 2026 · Last modified: Aug 11, 2026 · CWE-416

EPSS · 30d

Not enough EPSS history yet.

Technical description

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

Official references

msrc.microsoft.comhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70307

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2026-703117.8 HIG

———Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.4h CVE-2026-688207.0 HIG

———Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.4h CVE-2026-668028.1 HIG

———Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Azure Attestation service and Device Health Attestation Service allows an unauthorized attacker to execute code over a network.4h CVE-2026-657898.1 HIG

———Use after free in Windows DNS allows an unauthorized attacker to execute code over a network.4h CVE-2026-657887.0 HIG

———Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.4h CVE-2026-657837.0 HIG

———Use after free in Windows Autopilot allows an authorized attacker to elevate privileges locally.4h