CVE-2015-6111, CoreCVE

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MEDIUM

IPSec in Microsoft Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT Gold and 8.1, and Windows 10 Gold and 1511 mishandles encryption negotiation, which allows remote authenticated users to cause a denial of service (system hang) via crafted IP traffic, aka "Windows IPSec Denial of Service Vulnerability."

Published Nov 11, 2015

6.8

MEDIUM

CVSS 2.0

EPSS 7.79%

Description

IPSec in Microsoft Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT Gold and 8.1, and Windows 10 Gold and 1511 mishandles encryption negotiation, which allows remote authenticated users to cause a denial of service (system hang) via crafted IP traffic, aka "Windows IPSec Denial of Service Vulnerability."

Affected products

Remediation

No remediation recorded yet.

Metrics

7.79% 0.07790

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

EPSS probability 0.07790

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 (12 key points)

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

Date	Score	Percentile	Model
Oct 1, 2026	7.79% (0.07790)	94.48th	v5 (v2026.06.15)
Jun 15, 2026	7.79% (0.07790)	93.87th	v5 (v2026.06.15)
Mar 17, 2025	1.11% (0.01113)	76.67th	v4 (v2025.03.14)
Dec 12, 2024	0.17% (0.00165)	54.55th	v3 (v2023.03.01)
Jul 18, 2024	0.17% (0.00165)	53.62th	v3 (v2023.03.01)
Dec 11, 2023	0.15% (0.00153)	51.32th	v3 (v2023.03.01)
Nov 6, 2023	0.16% (0.00158)	52.15th	v3 (v2023.03.01)
Sep 3, 2023	0.15% (0.00150)	50.42th	v3 (v2023.03.01)
Mar 7, 2023	0.14% (0.00145)	48.58th	v3 (v2023.03.01)
Mar 6, 2023	11.29% (0.11291)	95.02th	v2 (v2022.01.01)
Apr 1, 2022	11.29% (0.11291)	94.61th	v2 (v2022.01.01)
Feb 4, 2022	11.29% (0.11291)	88.72th	v2 (v2022.01.01)

Weaknesses (1)

CWE-399

References (2)

http://www.securitytracker.com/id/1034123
vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-120
vendor-advisoryx_refsource_MSPatchVendor Advisory

Link	Providers	Tags
http://www.securitytracker.com/id/1034123		vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-120		vendor-advisoryx_refsource_MSPatchVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner microsoft

Published Nov 11, 2015

Updated Aug 6, 2024

Reserved Aug 14, 2015

Link CVE-2015-6111

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2015-6111

Red Hat

Severity n/a

Public date n/a

Links CVE-2015-6111