# CVE-2016-0099: Microsoft Windows Secondary Logon Service Privilege Escalation Vulnerability

> CVE-2016-0099: Microsoft Windows Secondary Logon Service Privilege Escalation Vulnerability. CVSS 7.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2016-0099
Last updated: 2025-10-21T23:55:54Z

- Published: 2016-03-09 11:00 UTC · Updated: 2025-10-21 23:55 UTC · Assigner: microsoft
- CVSS: 7.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS: 37.0%, 99th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2022-03-03, federal due date 2022-03-24, ransomware use: Known

## 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."

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Microsoft: Windows

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2016-0099)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2016-0099)
- [https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-032](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/39574/)
- [https://www.exploit-db.com/exploits/39719/](https://www.exploit-db.com/exploits/39719/)
- [https://www.exploit-db.com/exploits/39809/](https://www.exploit-db.com/exploits/39809/)
- [https://www.exploit-db.com/exploits/40107/](https://www.exploit-db.com/exploits/40107/)
- [http://www.securityfocus.com/bid/84034](http://www.securityfocus.com/bid/84034)
- [http://www.securitytracker.com/id/1035210](http://www.securitytracker.com/id/1035210)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2016-0099 · Markdown: https://rewindex.com/cve/CVE-2016-0099.md · JSON: https://rewindex.com/api/v1/cves/CVE-2016-0099 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:01:54.119Z