CVE-2015-1674 — The kernel in Microsoft Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 does not properly validate an unspecified address, which allows local users to bypass the KASLR protection mechanism, and consequently discover the cng.sys base address, via a crafted application, aka "Windows Kernel Security Feature Bypass Vulnerability."

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MEDIUM

The kernel in Microsoft Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 does not properly validate an unspecified address, which allows local users to bypass the KASLR protection mechanism, and consequently discover the cng.sys base address, via a crafted application, aka "Windows Kernel Security Feature Bypass Vulnerability."

Published May 13, 2015

4.6

MEDIUM

CVSS 2.0

EPSS 3.33%

Description

The kernel in Microsoft Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 does not properly validate an unspecified address, which allows local users to bypass the KASLR protection mechanism, and consequently discover the cng.sys base address, via a crafted application, aka "Windows Kernel Security Feature Bypass Vulnerability."

Affected products

Remediation

No remediation recorded yet.

Metrics

3.33% 0.03334

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.03334

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (9 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	3.33% (0.03334)	88.23th	v5 (v2026.06.15)
Jun 15, 2026	3.33% (0.03334)	87.02th	v5 (v2026.06.15)
Mar 17, 2025	0.24% (0.00241)	45.50th	v4 (v2025.03.14)
Dec 17, 2024	17.28% (0.17284)	96.07th	v3 (v2023.03.01)
Jun 26, 2024	0.16% (0.00164)	53.25th	v3 (v2023.03.01)
Mar 7, 2023	0.16% (0.00164)	51.24th	v3 (v2023.03.01)
Mar 6, 2023	1.96% (0.01961)	78.50th	v2 (v2022.01.01)
Apr 1, 2022	1.96% (0.01961)	76.61th	v2 (v2022.01.01)
Feb 4, 2022	1.96% (0.01961)	55.74th	v2 (v2022.01.01)

Weaknesses (1)

CWE-254

References (4)

http://www.securityfocus.com/bid/74488
vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1032292
vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-052
vendor-advisoryx_refsource_MSPatchVendor Advisory
https://www.exploit-db.com/exploits/37052/
exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry

Link	Providers	Tags
http://www.securityfocus.com/bid/74488		vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1032292		vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-052		vendor-advisoryx_refsource_MSPatchVendor Advisory
https://www.exploit-db.com/exploits/37052/		exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner microsoft

Published May 13, 2015

Updated Aug 6, 2024

Reserved Feb 17, 2015

Link CVE-2015-1674

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2015-1674

Red Hat

Severity n/a

Public date n/a

Links CVE-2015-1674