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CVE-2026-6958

7.8 · HIGH

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 ar…

Published Sep 4, 2026CWE-427EPSS 0.18%

Overview

CVE-2026-6958 is a high-severity vulnerability. It was published on September 4, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refolografix.org/acme/_poc/CVE-2026-6958.pdfRefseclists.org/fulldisclosure/2026/Sep/0Refwww.acunetix.com/Refwww.vulncheck.com/advisories/acunetix-local-privilege-escalation-via-wvsc-exeRefseclists.org/fulldisclosure/2026/Sep/0

How CyberStrike helps

Frequently asked questions

What is CVE-2026-6958?

CVE-2026-6958 is a high-severity vulnerability. It was published on September 4, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-6958?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-6958?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-6958?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-6958 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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