What is the CVSS score of CVE-2014-4076?

CVE-2014-4076 has a CVSS 2.0 base score of 7.2 (High). CVSS vector: AV:L/AC:L/Au:N/C:C/I:C/A:C. EPSS exploitation probability: 61.1%.

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

Yes, a public proof-of-concept exploit is available for CVE-2014-4076. Prioritise patching immediately. EPSS: 61.1%.

How to fix or mitigate CVE-2014-4076?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Monitor vendor channels for patch availability.

Microsoft CVE-2014-4076

HIGH

Permissions, Privileges, and Access Controls (CWE-264)

2014-11-11 secure@microsoft.com

Privilege Escalation Microsoft

7.2

CVSS 2.0 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-264 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V14 - Configuration Dependency management, component inventory MITRE ATT&CK 1 technique across 1 tactic: Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS 7.2, EPSS 61.1%, PoC available. Windows Server 2003 is well past end of life but persists in legacy environments, particularly in healthcare (medical devices), manufacturing (ICS/SCADA), and financial systems. Privilege escalation on domain-joined servers enables lateral movement and domain compromise.
Exploit ScenarioDerived	An attacker gains initial access to a Windows Server 2003 system as a low-privilege user. They execute the TCP/IP IOCTL exploit to gain SYSTEM privileges. With SYSTEM access, they dump cached credentials, access all local data, and if the server is domain-joined, begin lateral movement across the Active Directory domain.

Act Now Prioritize within 24-48h. Why: HIGH severity + EPSS > 10%.

No patch listed yet 61.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 26, 2026

Microsoft Windows Server 2003 SP2 contains a local privilege escalation vulnerability via crafted IOCTL calls to tcpip.sys or tcpip6.sys drivers. Local attackers can exploit improper access control in the TCP/IP driver to gain SYSTEM privileges on the server.

Earlier versions of this analysis (1)

v1 Mar 26, 2026 - 11:18 CVSS 7.2

Local privilege escalation in Windows Server 2003 via TCP/IP driver IOCTL allows standard users to gain SYSTEM privileges.

RemediationAI

Upgrade from Windows Server 2003 to a supported operating system. If upgrade is not possible, implement strict network segmentation to limit exposure. Restrict local logon rights to minimize the attack surface. Deploy host-based IDS to detect exploitation attempts.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The tcpip.sys and tcpip6.sys drivers in Windows Server 2003 SP2 improperly validate IOCTL request parameters from user-mode applications. A crafted IOCTL call can corrupt kernel memory or bypass access checks, allowing a local user to execute code with kernel/SYSTEM privileges. The TCP/IP driver is always loaded, making this a reliable escalation vector.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.2 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Confidentiality

Integrity

Availability

Lifecycle Timeline

PoC Detected

Apr 12, 2025 - 10:46 vuln.today

Public exploit code

CVE Published

Nov 11, 2014 - 22:55 nvd

HIGH 7.2

DescriptionCVE.org

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."

Executive ViewAI

Why It Matters

Organizations using Microsoft Windows Server 2003 SP2 face moderate risk from CVE-2014-4076 rated CVSS 7.2. Exploitation could compromise the security of affected deployments. With an EPSS score of 61%, this vulnerability faces very high likelihood of exploitation. Organizations should apply vendor updates when available and consider compensating controls in the interim.

Business Impact: Moderate

Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls to limit exposure; (2) Enable enhanced monitoring and alerting; (3) Apply principle of least privilege.

Threat Intelligence Overview

Threat Score

6.8/10

Composite threat intelligence

EPSS Score

61.1%

Top 2% exploitable

Threat Intel

1 sources

Exploit

POC

Public exploit code exists

Data Quality

6 sources

Confidence: High

NVD

CVE.org

EPSS POC (1) THREAT

Exploit-DB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC Yes

EPSS 61.1%

Patch available No

Active threat Yes

Deciding rule

HIGH severity + EPSS > 10%

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

Exploitation· derived

Active

System Exposure· derived

Small

Automatable· derived

Priority Score

142

Low Medium High Critical

KEV: 0

EPSS: +61

CVSS: +36

PoC: +20

Weaponized: +15

Threat intel: +10

Gov advisory: 0

Attack Technique

Privilege Escalation HIGH

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.