CISA KEV catalog
Confirmed active exploitation.
Listed in CISA's catalog of Known Exploited Vulnerabilities: attackers are using it in real attacks. Patch it with priority.
- Name
- Microsoft Windows Secondary Logon Service Privilege Escalation Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
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
microsoft: windows 10 1507; microsoft: windows 10 1511; microsoft: windows 7; microsoft: windows 8.1; microsoft: windows server 2008; microsoft: windows server 2012; microsoft: windows vista
References10
- docs.microsoft.com/en-us/security-updates/securitybulletins/201… PatchVendor Advisory
- docs.microsoft.com/en-us/security-updates/securitybulletins/201… PatchVendor Advisory
- www.exploit-db.com/exploits/39574/ ExploitThird Party AdvisoryVDB Entry
- www.exploit-db.com/exploits/39719/ ExploitThird Party AdvisoryVDB Entry
- www.exploit-db.com/exploits/39809/ ExploitThird Party AdvisoryVDB Entry
- www.exploit-db.com/exploits/40107/ ExploitThird Party AdvisoryVDB Entry
- www.exploit-db.com/exploits/39574/ ExploitThird Party AdvisoryVDB Entry
- www.exploit-db.com/exploits/39719/ ExploitThird Party AdvisoryVDB Entry
- www.exploit-db.com/exploits/39809/ ExploitThird Party AdvisoryVDB Entry
- www.exploit-db.com/exploits/40107/ ExploitThird Party AdvisoryVDB Entry
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 37% percentile: 99 · as of 8 November 2026
- CWE
- CWE-120
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