CVE-2016-7255 KEV EXPLOIT
7.8
HIGH · CVSS 3.1 · EPSS 81% (pctl 100)
Patch first
On CISA KEV — known exploited in the wild, due 2022-05-03.
Description
The kernel-mode drivers 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, Windows 10 Gold, 1511, and 1607, and Windows Server 2016 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability."
Scoring
| CVSS | 7.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| EPSS | 80.97% — more likely to be exploited than 100% of all CVEs |
| On CISA KEV | yes — remediate by 2022-05-03 |
| Public exploit | yes |
| Published | 2016-11-10 |
| Last modified | 2026-09-10 |
CISA KEV
| Name | Microsoft Win32k Privilege Escalation Vulnerability |
|---|---|
| Added | 2021-11-03 |
| Due | 2022-05-03 |
| Vendor / product | Microsoft / Win32k |
| Ransomware use | known |
Affected (10)
| Vendor | Product |
|---|---|
| microsoft | windows 10 1507 |
| microsoft | windows 10 1511 |
| microsoft | windows 10 1607 |
| microsoft | windows 7 |
| microsoft | windows 8.1 |
| microsoft | windows rt 8.1 |
| microsoft | windows server 2008 |
| microsoft | windows server 2012 |
| microsoft | windows server 2016 |
| microsoft | windows vista |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Microsoft Windows Kernel - 'win32k.sys NtSetWindowLongPtr' Local Privilege Escalation (MS16-135) (2) | 2017-01-08 |
| exploit-db | Microsoft Windows Kernel - 'win32k.sys NtSetWindowLongPtr' Local Privilege Escalation (MS16-135) (1) | 2016-11-24 |
| exploit-db | Microsoft Windows Kernel - 'win32k' Denial of Service (MS16-135) | 2016-11-09 |
References
- http://blog.trendmicro.com/trendlabs-security-intelligence/one-bit-rule-system-analyzing-cve-2016-7255-exploit-wild/
- http://packetstormsecurity.com/files/140468/Microsoft-Windows-Kernel-win32k.sys-NtSetWindowLongPtr-Privilege-Escalation.html
- http://www.securityfocus.com/bid/94064
- http://www.securitytracker.com/id/1037251
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-135
- https://github.com/mwrlabs/CVE-2016-7255
- https://securingtomorrow.mcafee.com/mcafee-labs/digging-windows-kernel-privilege-escalation-vulnerability-cve-2016-7255/
- https://security.googleblog.com/2016/10/disclosing-vulnerabilities-to-protect.html
- https://www.exploit-db.com/exploits/40745/
- https://www.exploit-db.com/exploits/40823/
- https://www.exploit-db.com/exploits/41015/
- http://blog.trendmicro.com/trendlabs-security-intelligence/one-bit-rule-system-analyzing-cve-2016-7255-exploit-wild/
- http://packetstormsecurity.com/files/140468/Microsoft-Windows-Kernel-win32k.sys-NtSetWindowLongPtr-Privilege-Escalation.html
- http://www.securityfocus.com/bid/94064
- http://www.securitytracker.com/id/1037251
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-135
- https://github.com/mwrlabs/CVE-2016-7255
- https://securingtomorrow.mcafee.com/mcafee-labs/digging-windows-kernel-privilege-escalation-vulnerability-cve-2016-7255/
- https://security.googleblog.com/2016/10/disclosing-vulnerabilities-to-protect.html
- https://www.exploit-db.com/exploits/40745/
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