CVE-2026-41088

HIGHNVD 7.87.8—

7.8

External control of file name or path in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVSS v3: 7.8
EG Score: 7.8(high)
EPSS: 22.1%
KEV: Not listed

Published

May 12, 2026

Last Modified

May 15, 2026

Advisory Details (1)

Auto-updated May 15, 2026

Patch available. Sources: microsoft.

microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41088

Vendor Advisories for CVE-2026-41088(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

CVE-2026-41088
Microsoft Security Response Center (MSRC)Elevation of Privilege
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Frequently asked(5)

What is CVE-2026-41088?

CVE-2026-41088 is a high vulnerability published on May 12, 2026. External control of file name or path in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

When was CVE-2026-41088 disclosed?

CVE-2026-41088 was first published in the National Vulnerability Database on May 12, 2026, with the most recent update on May 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-41088 actively exploited?

CVE-2026-41088 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-41088?

CVE-2026-41088 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2026-41088?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41088, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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Frequently asked(5)

What is CVE-2026-41088?

When was CVE-2026-41088 disclosed?

Is CVE-2026-41088 actively exploited?

What is the CVSS score of CVE-2026-41088?

CVE-2026-41088 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2026-41088?

CVE-2026-41088

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

Security Update Guide - Microsoft Security Response Center

📣 Vendor Advisories for CVE-2026-41088(1)

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-41088?

CVE-2026-41088

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

Security Update Guide - Microsoft Security Response Center

📣 Vendor Advisories for CVE-2026-41088(1)

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-41088?

🔗 Related CVEs(same product + same vendor)

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Published

Last Modified

Advisory Details (1)

Vendor Advisories for CVE-2026-41088(1)

Frequently asked(5)

Published

Last Modified

Advisory Details (1)

Vendor Advisories for CVE-2026-41088(1)

Frequently asked(5)

Related CVEs(same product + same vendor)