Local privilege escalation via TOCTOU race
Published Aug 19, 2026 · Updated Aug 19, 2026
Race condition in Dell Command Update before 5.7.1 allows local users to gain elevated privileges via a TOCTOU flaw. Dell and NVD identify CWE-367 but do not disclose the specific file, path, or resource that DCU checks and later uses non-atomically, so the public mechanism is limited to a TOCTOU condition in the update utility. Exploitation requires low-privileged local access to a vulnerable Windows installation, and public records describe privilege escalation rather than a remote compromise path.
Summary
What happened
Race condition in Dell Command Update before 5.7.1 allows local users to gain elevated privileges via a TOCTOU flaw. Dell and NVD identify CWE-367 but do not disclose the specific file, path, or resource that DCU checks and later uses non-atomically, so the public mechanism is limited to a TOCTOU condition in the update utility. Exploitation requires low-privileged local access to a vulnerable Windows installation, and public records describe privilege escalation rather than a remote compromise path.
The record
- CVE
- CVE-2026-53477
- Published
- Aug 19, 2026
- Updated
- Aug 19, 2026
- Vendor
- Unity Technologies
- Product
- Dell Command | Update
- Classifications
- CWE-367, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 19, 2026CVE publishedPublication date reported by the CVE source.
- Aug 19, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <5.7.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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