CVE-2016-7255

unknown KEV

Published 2021-11-03 · Modified 2021-11-03

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

2.5

Description

Microsoft Win32k kernel-mode driver fails to properly handle objects in memory which allows for privilege escalation. Successful exploitation allows an attacker to run code in kernel mode.

CISA KEV

Vendor: Microsoft
Product: Win32k
Due date: 2022-05-03

Predictions

Exploit likelihood

99%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-40745 dos windows

TinySec · 2016-11-09

Microsoft Windows Kernel - 'win32k' Denial of Service (MS16-135)

Source code queued for fetch — refresh in a moment.

EDB-40823 local windows

IOactive · 2016-11-24

Microsoft Windows Kernel - 'win32k.sys NtSetWindowLongPtr' Local Privilege Escalation (MS16-135) (1)

Source code queued for fetch — refresh in a moment.

EDB-41015 local windows

Rick Larabee · 2017-01-08

Microsoft Windows Kernel - 'win32k.sys NtSetWindowLongPtr' Local Privilege Escalation (MS16-135) (2)

Source code queued for fetch — refresh in a moment.

References

https://nvd.nist.gov/vuln/detail/CVE-2016-7255

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.