CVE-2016-0099
HIGHCISA KEVEPSS 98th pctlDescription
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."
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 98% of all known CVEs.
Microsoft Windows Secondary Logon Service Privilege Escalation Vulnerability
A privilege escalation vulnerability exists in Microsoft Windows if the Windows Secondary Logon Service fails to properly manage request handles in memory. An attacker who successfully exploited this vulnerability could run arbitrary code as an administrator.
Apply updates per vendor instructions.
Remediation due: 2022-03-24
Associated with ransomware campaigns
References
- http://www.securityfocus.com/bid/84034
- http://www.securitytracker.com/id/1035210
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-032
- https://www.exploit-db.com/exploits/39574/
- https://www.exploit-db.com/exploits/39719/
- https://www.exploit-db.com/exploits/39809/
- https://www.exploit-db.com/exploits/40107/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-0099
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-22.