CVE-2016-0099The 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 15…
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It affects microsoft windows_10_1507 and 6 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Mar 3, 2022; federal agencies had to remediate by Mar 24, 2022, and it is known to be used in ransomware. Treat that date as your deadline.
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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
- 7.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-120
- Known exploited
- Added to CISA KEV Mar 3, 2022; federal remediation due Mar 24, 2022; known ransomware useApply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 37.05% (percentile 99)
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
microsoft windows_10_1507 microsoft:windows_10_1507 | all versions | NVD |
microsoft windows_10_1511 microsoft:windows_10_1511 | all versions | NVD |
microsoft windows_7 microsoft:windows_7 | all versions | NVD |
microsoft windows_8.1 microsoft:windows_8.1 | all versions | NVD |
microsoft windows_server_2008 microsoft:windows_server_2008 | all versions; r2 | NVD |
microsoft windows_server_2012 microsoft:windows_server_2012 | all versions; r2 | NVD |
microsoft windows_vista microsoft:windows_vista | all versions | NVD |
References
- https://www.exploit-db.com/exploits/40107/exploit, x-refsource-exploit-db, third-party-advisory, vdb-entry
- https://www.exploit-db.com/exploits/39719/exploit, x-refsource-exploit-db, third-party-advisory, vdb-entry
- https://www.exploit-db.com/exploits/39809/exploit, x-refsource-exploit-db, third-party-advisory, vdb-entry
- http://www.securityfocus.com/bid/84034vdb-entry, x-refsource-bid, broken-link, third-party-advisory
- http://www.securitytracker.com/id/1035210vdb-entry, x-refsource-sectrack, broken-link, third-party-advisory
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-032vendor-advisory, x-refsource-ms, patch
- https://www.exploit-db.com/exploits/39574/exploit, x-refsource-exploit-db, third-party-advisory, vdb-entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-0099us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.