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DFIR-ORC CVE-2026-11958

| EUVDEUVD-2026-37877 HIGH
Uncontrolled Search Path Element (CWE-427)
2026-06-18 INCIBE
7.3
CVSS 4.0 · Vendor: INCIBE
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain low-privileged shell on Windows host
  2. Delivery
    Drop malicious DLL in C:\Windows\Temp with hijack-target name
  3. Exploit
    Wait for administrator to launch DFIR-ORC
  4. Execution
    DFIR-ORC extracts and loads attacker DLL
  5. Persist
    Code executes with administrator privileges
  6. Impact
    Establish persistent admin foothold

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A08:2025 - Software or Data Integrity Failures
ASVS 5.0
V13 - Configuration Search path element control
Exploitation Conditions

The attacker must already have local code execution as a standard user on the target Windows host with write access to C:\Windows\Temp (the default ACL grants Users write-but-not-list permission, which is sufficient to drop a DLL with a known name). Exploitation further requires that an administrator subsequently launches DFIR-ORC version 10.2.7 or earlier on that same host so it extracts into C:\Windows\Temp - without that triggering event the malicious DLL is never loaded. Exploitation is limited by: prior local access being required (AV:L, PR:L), the need for an administrator to execute DFIR-ORC out-of-band (UI:P / AT:P), the attacker correctly guessing the DLL name DFIR-ORC's loader will search for, and the host not yet running v10.3.0, which restricts the extraction-directory ACLs.

Impact

The provided CVSS 4.0 vector (AV:L/AC:L/AT:P/PR:L/UI:P) correctly characterizes this as a local, user-interaction-dependent escalation rather than a remote threat, but the VC/VI/VA:H plus SC/SI/SA:H impacts produce a base score of 7.3 because the outcome is full administrative compromise of the host. There is no EPSS score, no CISA KEV listing, and no public POC referenced, so realistic risk is moderate and bounded to environments where DFIR-ORC is actually deployed - primarily incident response engagements on Windows endpoints. The practical exposure window is the moment a responder runs DFIR-ORC on a host where an attacker already has a foothold; in that narrow scenario the attack is reliable and high-impact, but the attacker must already have a low-privileged shell, which limits opportunistic exploitation. AT:P (attack requirements present) and UI:P (passive user interaction) honestly reflect that the attacker must pre-stage the DLL and then wait for an out-of-band trigger.

Exploit ScenarioDerived

A low-privileged attacker who has already landed on a Windows endpoint drops a malicious DLL named after one of DFIR-ORC's expected dependencies into C:\Windows\Temp and waits. When an incident responder later runs DFIR-ORC (typically as administrator) to triage the host, the framework extracts itself into the same directory and loads the attacker's DLL, executing arbitrary code with administrator privileges. No public exploit identified at time of analysis, but the technique is a well-known DLL search-order hijack pattern and is straightforward to weaponize.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Jun 18, 2026

Local privilege escalation in ANSSI's DFIR-ORC versions 10.2.7 and prior allows a low-privileged local user to gain administrator rights by planting a malicious DLL in C:\Windows\Temp, which the tool loads automatically when extracted and executed from that shared directory. The flaw is a classic uncontrolled search path (CWE-427) issue and was reported by INCIBE; no public exploit identified at time of analysis and the CVE is not in CISA KEV. The vendor has shipped a fix in DFIR-ORC v10.3.0, which adds ACL hardening on extraction directories.

RemediationAI

Vendor-released patch: upgrade to DFIR-ORC v10.3.0 or later, which restricts ACLs on output and extraction directories to the current user and administrators and adds explicit ACL checks on DFIR-ORC related files (see https://github.com/DFIR-ORC/dfir-orc/releases/tag/v10.3.0 and the INCIBE advisory at https://www.incibe.es/en/incibe-cert/notices/aviso/local-privilege-escalation-anssis-dfir-orc). Until the upgrade is rolled out, only execute DFIR-ORC on hosts where you have first verified that C:\Windows\Temp does not contain unexpected DLLs, or override the extraction location to a freshly created directory whose ACLs grant write access only to SYSTEM and Administrators - note that changing the working directory may break embedded configuration assumptions and should be tested. As an operational compensating control, prefer running DFIR-ORC from removable or read-only media on a clean account rather than re-using a host where an attacker may have already staged files, accepting the trade-off of slower collection.

Affected VersionsENISA

DFIR-ORC 0 ≤10.2.7

Affected Packages

euvd dfir_orc no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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

Technical ContextAI · show details

DFIR-ORC is an open-source digital forensics and incident response collection framework maintained by ANSSI (the French national cybersecurity agency), commonly run by responders with administrative privileges to triage Windows hosts. On execution, the embedded binaries are extracted into C:\Windows\Temp - a world-writable directory by default - and then launched. CWE-427 (Uncontrolled Search Path Element) applies because the loader resolves dependent DLLs from that same writable extraction path, so any pre-staged DLL with a matching name is loaded into a process running as administrator. The affected component is identified by CPE cpe:2.3:a:anssi:dfir-orc:*:*:*:*:*:*:*:*, and the v10.3.0 release notes explicitly call out new ACL checks on DFIR-ORC related files and non-inherited, restricted ACLs on output directories - confirming the temp-directory permission model as the root cause.

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Severity by source

Vendor (INCIBE) PRIMARY 7.3 HIGH
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
vuln.today AI 8.2 HIGH

Local attacker with a standard user account (AV:L, PR:L) drops a DLL and waits for an admin to run DFIR-ORC (UI:R); successful load yields admin code execution crossing a privilege boundary (S:C) with full CIA impact.

3.1 AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Primary rating from Vendor (INCIBE).

CVSS VectorVendor: INCIBE

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
Low
User Interaction
Passive
Vulnerable system: Confidentiality
High
Vulnerable system: Integrity
High
Vulnerable system: Availability
High
Subsequent system: Confidentiality
High
Subsequent system: Integrity
High
Subsequent system: Availability
High

DescriptionCVE.org

Local privilege escalation by loading DLLs from a shared temporary directory in ANSSI’s DFIR-ORC, versions 10.2.7 and prior. An attacker with prior access to the system, can place a malicious DLL in C:\Windows\Temp and wait for the application to be executed. Because DFIR-ORC is extracted and executed from that location with administrative privileges, the malicious library can be loaded automatically, allowing the attacker to gain administrator privileges on the affected machine.

Executive ViewAI

Why It Matters

DFIR-ORC versions prior to 10.3.0 contain a privilege escalation vulnerability that could allow unauthorized access elevation within forensic environments. Organizations using DFIR-ORC must upgrade immediately, as unpatched deployments risk compromising the integrity of investigations and creating forensic evidence blind spots.

Business Impact: High
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.1%
Top 99% exploitable
Data Quality
7 sources
Confidence: High
EUVD NVD CVE.org EPSS Vulnrichment GitHub 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 No
Public POC No
EPSS 0.1%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
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
Scheduled
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact
High
Technical Impact
Total

Priority Score

36
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +36
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

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

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