CVE-2026-54424
HIGHDescription
An Incorrect Use of Privileged APIs vulnerability in Unity Parsec on Windows hosts leads to a potential Elevation of Privilege. This issue affects Parsec through v2026-05-04.0. The patched version is Parsec for Windows version 150-104a. A user can generate a situation where there is an instance of parsecd.exe running as NT AUTHORITY\SYSTEM with a user-controlled value of the AppData environment variable.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Low risk: more likely to be exploited than 16% of all known CVEs.
References
Related Vulnerabilities
Other CWE-648 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2026-20122 | Medium | 5.4 | 25% | KEV | Fix |
| CVE-2019-14813 | Critical | 9.8 | 11% | - | Fix |
| CVE-2024-8785 | Critical | 9.8 | 9.7% | - | Fix |
| CVE-2025-54766 | Medium | 5.3 | 6.9% | - | - |
| CVE-2025-54765 | Medium | 5.3 | 6.9% | - | - |
| CVE-2025-54767 | Medium | 6.5 | 5.3% | - | - |
Common questions
How do I fix CVE-2026-54424?
No published fix for CVE-2026-54424 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-54424 being actively exploited?
Not that we know of. CVE-2026-54424 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.24% is the estimated probability that it will be exploited in the next 30 days. That is higher than 16% of all scored CVEs.
How severe is CVE-2026-54424?
CVE-2026-54424 has a CVSS v3 base score of 8.4, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-06.