Which products and versions are affected by CVE-2014-4076?

Affected: Windows Server 2003 (Microsoft). The full list is in the CVE brief.

Is CVE-2014-4076 being exploited in the wild?

It is exploited in the wild, listed in Industry KEV feed since Aug 4, 2016.

Is CVE-2014-4076 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2014-4076?

Public exploit code is available.

Is there a fix for CVE-2014-4076?

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

How urgently should CVE-2014-4076 be patched?

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

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Emerging threatsHigh

CVE-2014-4076Windows Server 2003 Vulnerability

Microsoft Windows Server 2003 SP2 allows local users to gain privileges via a crafted IOCTL call to (1) tcpip.sys or (2) tcpip6.sys, aka "TCP/IP Elevation of Privilege Vulnerability."

Published Nov 11, 2014 · Updated May 6, 2026

Key Facts

Patch immediately

CVE-2014-4076 is a high-severity vulnerability (CVSS 7.2 v2) affecting Windows Server 2003 (Microsoft).
It is exploited in the wild, listed in Industry KEV feed since Aug 4, 2016. Public exploit code is available.
EPSS estimates a 23% 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.

Scores

CVSS v2

7.2

AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS (30-day exploit likelihood)

23%

Higher than 97.7% of all scored CVEs

Exploit maturity

Weaponized

ATLAS score

49/100

Publication score, see How it works

Exploitation Verdict

KEV listed

Aug 4, 2016

Federal due date

None

No federal due date

Ransomware use

Not reported

Attributed actors

None named

Exploit & Defence Guidance

Exploit maturity

Weaponized

Public exploit code

Proof-of-concept links

In-the-wild evidence

Reports of active use

Description

Microsoft Windows Server 2003 SP2 allows local users to gain privileges via a crafted IOCTL call to (1) tcpip.sys or (2) tcpip6.sys, aka "TCP/IP Elevation of Privilege Vulnerability."

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	Aug 4, 2016	n/a	Not reported

Affected Products

3 affected entries in total

Product	Affected versions	Fixed in
Windows Server 2003Microsoft	See advisory	n/a

Timeline

Publicly disclosed
Nov 11, 2014
Added to Industry KEV feed
Aug 4, 2016
Last updated
May 6, 2026

Weakness Type

CWE-264

References

8 more references in the full CVE brief

FAQ

Common Questions.

Microsoft Windows Server 2003 SP2 allows local users to gain privileges via a crafted IOCTL call to (1) tcpip.sys or (2) tcpip6.sys, aka "TCP/IP Elevation of Privilege Vulnerability."
Affected: Windows Server 2003 (Microsoft). The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Aug 4, 2016.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
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.

Is CVE-2014-4076 On Your Attack Surface?

Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.