Acunetix 25.11.251107123 for Windows contains a local privilege escalation vulnerability in the Web Vulnerability Scanning Engine (wvsc.exe) that allows low-privileged local attackers to execute arbitrary code as SYSTEM by exploiting a missing hardcoded directory path for OpenSSL-related files. Attackers can create the missing directory, place a malicious file at the expected path, and cause the SYSTEM-level wvsc.exe process to load and execute it, resulting in full privilege escalation.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 5
https://olografix.org/acme/_poc/CVE-2026-6958.pdf
disclosure@vulncheck.com
https://seclists.org/fulldisclosure/2026/Sep/0
disclosure@vulncheck.com
https://www.acunetix.com/
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/acunetix-local-privilege-escalation-via-wv…
disclosure@vulncheck.com
http://seclists.org/fulldisclosure/2026/Sep/0
af854a3a-2127-422b-91ae-364da2661108