HOMEVULNERABILITIESCVE-2026-35416
HIGH

CVE-2026-35416

CWE-416Published: May 12, 2026· Updated: May 14, 2026

7.0
CVSS v3.1
EPSS:0.05%probability of exploitation in 30 daysPercentile:16.9th

Official Description

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

NVD Source

Technical Analysis

CVE-2026-35416 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.0.

From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityHigh
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Microsoft14 products
windows 10 1607windows 10 1809windows 10 21h2windows 10 22h2windows 11 23h2windows 11 24h2windows 11 25h2windows 11 26h1windows server 2012windows server 2016windows server 2019windows server 2022+2 more
Source: NVD CPE · 15 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
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Official Patches & Advisories

All References (1)

Quick Facts

CVE IDCVE-2026-35416
CVSS Score7.0 / 10
SeverityHIGH
WeaknessCWE-416
CISA KEVNo
EPSS (30d)0.05%
Affected1 vendor
PublishedMay 12, 2026

Related CVEs (CWE-416)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2026-35416 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.