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

Yes. CVE-2015-2546 is on the CISA Known Exploited Vulnerabilities list, added 2022-03-15, and has known ransomware campaign use.

What is the CVSS severity of CVE-2015-2546?

CVE-2015-2546 has a CVSS v3 base score of 8.2 (HIGH).

What is the EPSS score for CVE-2015-2546?

CVE-2015-2546 has an EPSS score of 10.93% (95th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2015-2546

HIGHCISA KEVEPSS 95th pctl

8.2

CVSS v3

NVD

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.

CWE-119Buffer Overflow

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionRequired

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

10.93%probability of exploitation in 30 days

95thpercentile

Very high risk: more likely to be exploited than 95% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Microsoft Win32k Memory Corruption Vulnerability

The kernel-mode driver in Microsoft Windows OS and Server allows local users to gain privileges via a crafted application.

Apply updates per vendor instructions.

Remediation due: 2022-04-05

Associated with ransomware campaigns

References

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-22.