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…
- Published
- Updated
- Reserved
- Assigned by
- microsoft
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."
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Microsoft Windows Secondary Logon Service Privilege Escalation Vulnerability.
- Added
- 3 Mar 2022
- Fix due (US federal)
- 24 Mar 2022
- Used by ransomware
- Known
Apply updates per vendor instructions.
Public exploit
4 references of the record are tagged as an exploit or proof of concept: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: it is being exploited.
- 40107 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 39719 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 39809 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 39574 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Timeline
ID reserved
By microsoft
- 3 months later
· 3 months later
Published
- 6 years later
· 6 years later
Added to CISA KEV
Known exploited, also by ransomware
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 37.0% · top 1.5% of all CVEs (8 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
n/a
- affected n/a
References (8)
- 40107 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 39719 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 39809 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 84034 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 1035210 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- MS16-032 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
- 39574 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-0099 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2016-0099)Record last updated .