What is CVE-2015-2546?

CVE-2015-2546 is a high-severity vulnerability in Microsoft Windows 10 1507, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.2/10. Published 2015-09-09.

How severe is CVE-2015-2546?

High severity. CVSS v3 base score is 8.2 out of 10.

Is CVE-2015-2546 known to be exploited?

Yes. CVE-2015-2546 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-15), indicating it is being actively exploited. 29 public proof-of-concept repositories are indexed.

Buffer overflow in Microsoft Windows 10 1507

CVE-2015-2546

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.

Vulnerability class: Buffer Overflow

Published 2015-09-09 · last modified 2026-08-14.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.101 (95.6th percentile), scored 2026-10-18.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.101 · newest: 0.101 · change: 0.000

Affected products

Microsoft Windows 10 1507
Microsoft Windows 7
Microsoft Windows 8
Microsoft Windows 8.1
Microsoft Windows Rt
Microsoft Windows Rt 8.1
Microsoft Windows Server 2008 — versions r2
Microsoft Windows Server 2012 — versions r2
Microsoft Windows Vista

Weakness classification (CWE)

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

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-03-15. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-04-05.

Required action: Apply updates per vendor instructions.

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

www.securitytracker.com/id/1033485 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-097 (vendor-advisory, Patch, Vendor Advisory)
www.securityfocus.com/bid/76608 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2015-2546?: CVE-2015-2546 is a high-severity vulnerability in Microsoft Windows 10 1507, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.2/10. Published 2015-09-09.
How severe is CVE-2015-2546?: High severity. CVSS v3 base score is 8.2 out of 10.
Is CVE-2015-2546 known to be exploited?: Yes. CVE-2015-2546 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-15), indicating it is being actively exploited. 29 public proof-of-concept repositories are indexed.