How severe is CVE-2026-54424?

CVE-2026-54424 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-54424 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-54424?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-54424 published?

CVE-2026-54424 was published on 2026-07-04 and last updated on 2026-07-06.

CVE-2026-54424

CVE-2026-54424 is a high-severity vulnerability with a CVSS 3.x base score of 8.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-648.

Key facts

Severity: High (CVSS 3.x base score 8.4)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-648
Published: 2026-07-04
Last modified: 2026-07-06

Description

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.

Frequently asked questions

What is CVE-2026-54424?: 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 severe is CVE-2026-54424?: CVE-2026-54424 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-54424 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-54424?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-54424 published?: CVE-2026-54424 was published on 2026-07-04 and last updated on 2026-07-06.

References

Other CWE-648 vulnerabilities

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CVE-2024-11068 — Critical (CVSS 9.8): The D-Link DSL6740C modem has an Incorrect Use of Privileged APIs vulnerability, allowing unauthenticated remote…
CVE-2023-4972 — Critical (CVSS 9.8): Incorrect Use of Privileged APIs vulnerability in Yepas Digital Yepas allows Collect Data as Provided by Users. This…
CVE-2026-41225 — Critical (CVSS 9.1): A vulnerability exists in iControl REST where a highly privileged, authenticated attacker with at least the Manager…
CVE-2026-41386 — Critical (CVSS 9.1): OpenClaw before 2026.3.22 contains a privilege escalation vulnerability where bootstrap setup codes are not bound to…

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