PatchSiren cyber security CVE debrief
CVE-2026-11958 ANSSI CVE debrief
CVE-2026-11958 is a high-severity local privilege escalation vulnerability in ANSSI's DFIR-ORC, affecting versions 10.2.7 and prior. An attacker with prior access to the system can exploit this vulnerability by placing a malicious DLL in the C:WindowsTemp directory, which can be loaded automatically when the application is executed with administrative privileges, allowing the attacker to gain administrator privileges on the affected machine. This vulnerability has a CVSS score of 7.3 and is considered high severity. Users of affected DFIR-ORC versions should take immediate action to mitigate this vulnerability.
- Vendor
- ANSSI
- Product
- DFIR-ORC
- CVSS
- HIGH 7.3
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-06-18
- Original CVE updated
- 2026-06-22
- Advisory published
- 2026-06-18
- Advisory updated
- 2026-06-22
Who should care
System administrators, security teams, and users of ANSSI's DFIR-ORC, versions 10.2.7 and prior, should be aware of this vulnerability and take necessary actions to prevent exploitation.
Technical summary
The vulnerability exists due to the way DFIR-ORC loads DLLs from a shared temporary directory. An attacker can place a malicious DLL in the C:WindowsTemp directory, which can be loaded automatically when the application is executed with administrative privileges. This allows the attacker to gain administrator privileges on the affected machine. The vulnerability has been assigned a CVSS score of 7.3 and is considered high severity.
Defensive priority
High
Recommended defensive actions
- Update DFIR-ORC to version 10.3.0 or later
- Use secure temporary directories for DFIR-ORC execution
- Restrict access to the C:WindowsTemp directory
- Implement strict access controls for DFIR-ORC execution
- Monitor system logs for suspicious activity
- Use antivirus software to detect and prevent malicious DLLs
- Regularly review and update system configurations
Evidence notes
The vulnerability was reported by Incibe and is publicly disclosed. The CVE record and NVD details are available for reference. [ref-4] and [ref-5] provide additional information on the vulnerability and mitigation.
Official resources
Public