CVE-2016-0099
The Secondary Logon Service in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 does not properly process request handles, which allows local users to gain privileges via a crafted application, aka "Secondary Logon Elevation of Privilege Vulnerability."
Key facts
- CVSS score
- 7.8 (v3.1)
- Severity
- HIGH
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
- CWE-120
- EPSS score
- 37.0% (98th percentile)
- In CISA KEV
- Yes, added March 3, 2022
- In EU EUVD
- Yes (EUVD-2016-0137)
- Published
- March 9, 2016
- NVD last modified
- June 17, 2026
- Status
- Analyzed
CISA Known Exploited Vulnerability
Microsoft Windows Secondary Logon Service Privilege Escalation Vulnerability
Added to the KEV catalog on March 3, 2022; federal remediation due March 24, 2022. Known to be used in ransomware campaigns.
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2016-0137 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on October 21, 2025.
View on the EU Vulnerability DatabaseAffected products
- microsoft / windows 10 1507
- microsoft / windows 10 1511
- microsoft / windows 7
- microsoft / windows 8.1
- 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
9 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.
- 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
- Windows Vista Enhanced Cryptographic Provider (RSAENH) - Microsoft Corporation - FIPS 140 1002 - historical
- Windows Vista Enhanced DSS and Diffie-Hellman Cryptographic Provider (DSSENH) - Microsoft Corporation - FIPS 140 1003 - historical
- Windows Vista Boot Manager (bootmgr) - Microsoft Corporation - FIPS 140 978 - historical
See all 9 in the Security Certifications Explorer.
References
- http://www.securityfocus.com/bid/84034(Broken Link, Third Party Advisory, VDB Entry)
- http://www.securitytracker.com/id/1035210(Broken Link, Third Party Advisory, VDB Entry)
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-032(Patch, Vendor Advisory)
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-0099(US Government Resource)
- https://www.exploit-db.com/exploits/39574/(Exploit, Third Party Advisory, VDB Entry)
- https://www.exploit-db.com/exploits/39719/(Exploit, Third Party Advisory, VDB Entry)
- https://www.exploit-db.com/exploits/39809/(Exploit, Third Party Advisory, VDB Entry)
- https://www.exploit-db.com/exploits/40107/(Exploit, Third Party Advisory, VDB Entry)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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