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CISA KEV·Added 2022-03-03 — agencies required to remediate by 2022-03-24 · Ransomware

CVE-2016-0099

HIGH

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…

Published
Mar 9, 2016
Updated
Apr 22, 2026
Affected
0 pkgs
Patched
None yet
Exploits
12 known

EPSS Exploitation Probability

via FIRST.org ↗
90.4%probability of exploitation in next 30 days
Very High Risk100th percentile0.00%
89.9%90.8%91.7%92.5%91.2%90.4%Dec 25Apr 26Jun 26

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

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."

Affected Products

7 products · 9 configurations
OS
windows 7microsoft
all
OS
windows 8.1microsoft
all
OS
windows 10 1507microsoft
all
OS
windows 10 1511microsoft
all
OS
windows server 2008microsoft
1 version
r2
OS
windows server 2012microsoft
1 version
r2
Exploits & PoCs
12

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-39719localwindows✓ Verified

Microsoft Windows 7 < 10 / 2008 < 2012 R2 (x86/x64) - Local Privilege Escalation (MS16-032) (PowerShell)

by b33f · Apr 21, 2016

EDB-40107localwindows✓ Verified

Microsoft Windows 7 < 10 / 2008 < 2012 (x86/x64) - Secondary Logon Handle Privilege Escalation (MS16-032) (Metasploit)

by Metasploit · Jul 13, 2016

EDB-39574localwindows_x86✓ Verified

Microsoft Windows 8.1/10 (x86) - Secondary Logon Standard Handles Missing Sanitization Privilege Escalation (MS16-032)

by Google Security Research · Mar 21, 2016

EDB-39809localwindows✓ Verified

Microsoft Windows 7 < 10 / 2008 < 2012 (x86/x64) - Local Privilege Escalation (MS16-032)

by fdiskyou · Apr 25, 2016

Frequently Asked Questions

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."
O3 Security · Impact-Aware SCA

Is CVE-2016-0099 in your stack?

O3 detects CVE-2016-0099 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.