What is CVE-2026-70264?

CVE-2026-70264 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Microsoft Defender Information Disclosure Vulnerability

Which CVE IDs does CVE-2026-70264 cover?

CVE-2026-70264 covers the following CVE IDs: CVE-2026-70264. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-70264?

CVE-2026-70264 has a CVSS v3 base score of 5.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-70264?

CVE-2026-70264 affects 1 product, including: Windows Defender.

CVE-2026-70264HighCVSS 5.5

Microsoft Defender Information Disclosure Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

October 13, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-70264 →

📋 Description

Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to disclose information locally.

🎯 Affected products1

Windows Defender

✅ Remediation

KBRelease Notes (Security Update) — fixed build 1.1.26090.9

🔗 References (1)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70264