What is the CVSS score of CVE-2013-3906?

CVE-2013-3906 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 92.6%.

Is there a public PoC exploit available for CVE-2013-3906?

Yes, a public proof-of-concept exploit is available for CVE-2013-3906. Prioritise patching immediately. EPSS: 92.6%.

How to fix or mitigate CVE-2013-3906?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Validate that input sanitization is in place for all user-controlled parameters.

Microsoft CVE-2013-3906

HIGH

Code Injection (CWE-94)

2013-11-06 secure@microsoft.com

RCE Microsoft Code Injection

7.8

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-94 OWASP Top 10:2025 A03:2021 - Injection ASVS 5.0 V5 - Validation, Sanitization and Encoding Input validation, output encoding, parameterized queries MITRE ATT&CK 2 techniques across 2 tactics: Execution, Initial Access 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	High risk. The zero-day targeted organizations in Pakistan and the Middle East. GDI+ is a shared system component, so any application rendering TIFF images was a potential attack surface.
Exploit ScenarioDerived	Spear-phishing emails delivered Word documents with embedded TIFF images exploiting the GDI+ flaw. Opening the document triggered the exploit through Office's use of GDI+ for image rendering, installing the Hangover/Patchwork group's custom malware for intelligence collection.

Act Now Prioritize within 24-48h. Why: In CISA KEV with patch available.

Exploited in the wild (CISA KEV) Patch available 92.6% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 26, 2026

GDI+ in Microsoft Windows and Office fails to properly handle TIFF images, allowing remote code execution through crafted documents, actively exploited in targeted attacks against Pakistani and Middle Eastern organizations.

Earlier versions of this analysis (1)

v1 Mar 26, 2026 - 11:18 CVSS 7.8

A code injection vulnerability in GDI+ TIFF image processing allows remote attackers to execute arbitrary code through malicious TIFF images embedded in Word documents, exploited in the wild in October and November 2013.

RemediationAI

Apply Microsoft security update MS13-096. Disable TIFF rendering via the TIFF codec workaround. Block documents with embedded TIFF images at the email gateway.

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 CWE-94 vulnerability in GDI+'s TIFF codec allows specially crafted TIFF images to trigger code execution when rendered by any application using GDI+ (including Office, Lync, and Windows Photo Viewer). Attackers embedded exploit TIFF images in Word documents for delivery.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.8 HIGH

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Added to CISA KEV

Oct 22, 2025 - 01:15 cisa

CISA KEV

PoC Detected

Oct 22, 2025 - 01:15 vuln.today

Public exploit code

Patch released

Oct 22, 2025 - 01:15 nvd

Patch available

CVE Published

Nov 06, 2013 - 15:55 nvd

HIGH 7.8

DescriptionCVE.org

GDI+ in Microsoft Windows Vista SP2 and Server 2008 SP2; Office 2003 SP3, 2007 SP3, and 2010 SP1 and SP2; Office Compatibility Pack SP3; and Lync 2010, 2010 Attendee, 2013, and Basic 2013 allows remote attackers to execute arbitrary code via a crafted TIFF image, as demonstrated by an image in a Word document, and exploited in the wild in October and November 2013.

Executive ViewAI

Why It Matters

CVE-2013-3906 presents notable security risk, a code injection vulnerability rated CVSS 7.8. Successful exploitation could allow attackers to execute arbitrary code or commands on affected systems, potentially leading to full system compromise. This vulnerability is actively exploited in the wild (KEV-listed) and requires immediate remediation. A patch is available and should be applied as part of regular vulnerability management.

Business Impact: Severe

Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Deploy WAF rules to block injection patterns; (2) Restrict network access to affected components; (3) Enable enhanced logging for suspicious activity.

Threat Intelligence Overview

Threat Score

9.3/10

Composite threat intelligence

EPSS Score

92.6%

Top 0% exploitable

Threat Intel

1 sources

Exploit

POC

Public exploit code exists

Data Quality

8 sources

Confidence: High

NVD

CVE.org

CISA KEV

EPSS POC (1) THREAT

Exploit-DB

VulDB

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 Yes

Public POC Yes

EPSS 92.6%

Patch available Yes

Active threat Yes

Deciding rule

In CISA KEV with patch available

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

SSVC Decision· derived

Out-of-Cycle

Exploitation· derived

Active

System Exposure· derived

Small

Automatable· derived

Human Impact

Very High

Priority Score

227

Low Medium High Critical

KEV: +50

EPSS: +93

CVSS: +39

PoC: +20

Weaponized: +15

Threat intel: +10

Gov advisory: 0

Attack Technique

Code Injection CRITICAL

Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.