CVE-2026-70264
Microsoft Defender Information Disclosure Vulnerability
Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to disclose information locally.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Defender Information Disclosure Vulnerability
Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to disclose information locally.
- Record
CVE-2026-70264- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C - Weakness
- CWE-59
- Updated
- 2026-11-02
EUVDEUVD-2026-100136
Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to disclose information locally.
- Record
EUVD-2026-100136- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-878h-ggqr-r6qq
Improper link resolution before file access ('link following') in Microsoft Defender allows an...
Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to disclose information locally.
- Record
GHSA-878h-ggqr-r6qq- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-59
- Updated
- 2026-11-02
NVD
Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to disclose information locally.
- Record
CVE-2026-70264- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-59
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-70264 is a medium vulnerability (CVSS 5.5) in Microsoft Windows Defender, published October 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.49%, the 42nd percentile. No source names a fixed version.