Is CVE-2015-1769 being actively exploited?

Yes. CVE-2015-1769 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added on May 25, 2022.

What is the CVSS score for CVE-2015-1769?

CVE-2015-1769 has a CVSS 3.1 base score of 6.6 (MEDIUM).

CVE-2015-1769

MEDIUM · CVSS 6.6CISA KEV: actively exploitedEPSS 4.1%EU EUVD: exploited

Mount Manager in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT Gold and 8.1, and Windows 10 mishandles symlinks, which allows physically proximate attackers to execute arbitrary code by connecting a crafted USB device, aka "Mount Manager Elevation of Privilege Vulnerability."

Key facts

CVSS score: 6.6 (v3.1)
Severity: MEDIUM
CVSS vector: CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-264
EPSS score: 4.1% (91th percentile)
In CISA KEV: Yes, added May 25, 2022
In EU EUVD: Yes (EUVD-2015-1899)
Published: August 15, 2015
NVD last modified: June 17, 2026
Status: Analyzed

CISA Known Exploited Vulnerability

Microsoft Windows Mount Manager Privilege Escalation Vulnerability

Added to the KEV catalog on May 25, 2022; federal remediation due June 15, 2022.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2015-1899 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on October 21, 2025.

View on the EU Vulnerability Database

Affected products

microsoft / windows 10
microsoft / windows 7
microsoft / windows 8
microsoft / windows 8.1
microsoft / windows rt
microsoft / windows rt 8.1
microsoft / windows server 2008
microsoft / windows server 2008
microsoft / windows server 2008
microsoft / windows server 2012
microsoft / windows server 2012
microsoft / windows vista

Certified products that may be affected

15 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Microsoft Windows 8 and Windows RT - Microsoft Corporation - Common Criteria CCEVS-VR-VID-10620-2015 - archived
Windows 7 BitLocker™ Drive Encryption - Microsoft Corporation - FIPS 140 1332 - historical
Microsoft Windows 7 Kernel Mode Cryptographic Primitives Library (cng.sys) - Microsoft Corporation - FIPS 140 1328 - historical
Microsoft Windows Vista Kernel Mode Security Support Provider Interface (ksecdd.sys) - Microsoft Corporation - FIPS 140 1000 - historical
Microsoft Windows Vista Cryptographic Primitives Library (bcrypt.dll) - Microsoft Corporation - FIPS 140 1001 - historical

See all 15 in the Security Certifications Explorer.

References

http://blogs.technet.com/b/srd/archive/2015/08/11/defending-against-cve-2015-1769-a-logical-issue-exploited-via-a-malicious-usb-stick.aspx(Vendor Advisory)
http://www.securitytracker.com/id/1033244(Third Party Advisory, VDB Entry)
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-085(Patch, Vendor Advisory)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-1769(US Government Resource)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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