Vulnerability Intelligence Report
Microsoft Defender Information Disclosure Vulnerability
CVE-2026-70264
Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to disclose information locally.
No Active Exploit Signals
CVSS Base Score
5.5
MEDIUM
Exploitability:1.9
Impact Score:3.6
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-59 ↗CWE-59: Improper Link Resolution Before File Access ('Link Following')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | Windows Defender | 0 < 1.1.26090.9 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2026-08-03T23:56:34 |
| Published | 2026-10-13T19:01:09 |
| Patch Date | 2026-10-13 |
| Last Updated | 2026-10-13T22:23:11 |
Community Chatter & Buzz