Which products and versions are affected by CVE-2015-2546?

Affected: Windows 10 1507 (Microsoft); Windows 7 (Microsoft); Windows 8 (Microsoft), among others. The full list is in the CVE brief.

Is CVE-2015-2546 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 8, 2015 and is known to be used in ransomware campaigns.

Is CVE-2015-2546 in the CISA KEV catalog?

Yes. It was added on Mar 15, 2022 with a federal remediation due date of Apr 5, 2022.

Is there a public exploit for CVE-2015-2546?

Public exploit code is available.

Is there a fix for CVE-2015-2546?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2015-2546 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2015-2546

HighExploitedPublic exploit

Published Sep 8, 2015 · Updated Aug 14, 2026

Key Facts

Patch immediately

CVE-2015-2546 is a high-severity vulnerability (CVSS 8.2 v3.1) affecting Windows 10 1507 (Microsoft), Windows 7 (Microsoft), Windows 8 (Microsoft) and 6 more products.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 8, 2015 and is known to be used in ransomware campaigns. Public exploit code is available.
EPSS estimates a 10% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

8.2

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

EPSS (30-day exploit likelihood)

10%

Higher than 95.6% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings, used by ransomware

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2015-2546 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

The kernel-mode driver in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT Gold and 8.1, and Windows 10 allows local users to gain privileges via a crafted application, aka "Win32k Memory Corruption Elevation of Privilege Vulnerability," a different vulnerability than CVE-2015-2511, CVE-2015-2517, and CVE-2015-2518.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Mar 15, 2022	Apr 5, 2022	Known
Industry KEV feed	Sep 8, 2015	Apr 5, 2022	Known
CIRCL KEV	Mar 15, 2022	Apr 5, 2022	Known
ENISA EUVD	Mar 15, 2022	n/a	Not reported

Required action: Apply updates per vendor instructions.

Affected Products

12 affected entries in total

Product	Affected versions	Fixed in
Windows 10 1507Microsoft	See advisory	n/a
Windows 7Microsoft	See advisory	n/a
Windows 8Microsoft	See advisory	n/a
Windows 8.1Microsoft	See advisory	n/a
Windows RtMicrosoft	See advisory	n/a

4 more affected products in the full CVE brief

Timeline

Publicly disclosed
Sep 8, 2015
Added to Industry KEV feed
Sep 8, 2015
Added to CISA KEV
Mar 15, 2022
Added to CIRCL KEV
Mar 15, 2022
Added to ENISA EUVD
Mar 15, 2022
Last updated
Aug 14, 2026

Weakness Type

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

6 more references in the full CVE brief

FAQ

Common Questions.

The kernel-mode driver in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT Gold and 8.1, and Windows 10 allows local users to gain privileges via a crafted application, aka "Win32k Memory Corruption Elevation of Privileg…
Affected: Windows 10 1507 (Microsoft); Windows 7 (Microsoft); Windows 8 (Microsoft), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 8, 2015 and is known to be used in ransomware campaigns.
Yes. It was added on Mar 15, 2022 with a federal remediation due date of Apr 5, 2022.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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