Skip to main content

CVE-2016-0099

7.8
HIGHCVSS v3.1 Base Score
90.44%
HIGH RiskEPSS (100th percentile)
KEV

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."

Published: 3/9/2016
Modified: 4/22/2026
Back to CVE Lookup

ACTIVELY EXPLOITED IN THE WILD

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability Name:

Microsoft Windows Secondary Logon Service Privilege Escalation Vulnerability

Vendor / Product:

Microsoft Windows

Required Action:

Apply updates per vendor instructions.

Due Date: 3/24/2022(OVERDUE)
Ransomware Campaign Use
Added to KEV:

3/3/2022

Notes:

https://nvd.nist.gov/vuln/detail/CVE-2016-0099

Vulnerability Summary

CVSS v3 Score

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2 Score

7.2

AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS Score (Exploitation Probability)

90.44%HIGH Exploitation Risk
100th percentile

This vulnerability has a 90.44% probability of being exploited in the next 30 days, ranking higher than 100% of all scored CVEs.

CWE Classification

Related Vulnerabilities

Same Weakness Type(CWE-120)

CVE-2026-7607HIGH 8.8

A security vulnerability has been detected in TRENDnet TEW-821DAP 1.12B01. Impacted is the function auto_update_firmware of the component Firmware Udpate. The manipulation of the argument str leads to buffer overflow. The attack may be initiated remotely. The vendor explains: "That firmware version will only work on our hardware version v1.xR. We have already EOL that product 8 years ago and are no longer selling". This vulnerability only affects products that are no longer supported by the maintainer.

5/2/2026
CVE-2020-37043CRITICAL 9.8

10-Strike Bandwidth Monitor 3.9 contains a buffer overflow vulnerability that allows attackers to bypass SafeSEH, ASLR, and DEP protections through carefully crafted input. Attackers can exploit the vulnerability by sending a malicious payload to the application's registration key input, enabling remote code execution and launching arbitrary system commands.

1/30/2026
CVE-2026-1420HIGH 8.8

A flaw has been found in Tenda AC23 16.03.07.52. This impacts an unknown function of the file /goform/WifiExtraSet. This manipulation of the argument wpapsk_crypto causes buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.

1/26/2026
CVE-2021-47854CRITICAL 9.8

DD-WRT version 45723 contains a buffer overflow vulnerability in the UPNP network discovery service that allows remote attackers to potentially execute arbitrary code. Attackers can send crafted M-SEARCH packets with oversized UUID payloads to trigger buffer overflow conditions on the target device.

1/21/2026
CVE-2026-1162CRITICAL 9.8

A flaw has been found in UTT HiPER 810 1.7.4-141218. The impacted element is the function strcpy of the file /goform/setSysAdm. This manipulation of the argument passwd1 causes buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.

1/19/2026

Similar SeverityHIGH