Protection bypass via mutable security version number
Published Sep 10, 2026 · Updated Sep 10, 2026
Security-version rollback weakness in Dell ThinOS 10 before 2605_10.2616 allows physically proximate attackers with low privileges to bypass protections. The anti-rollback control stores a mutable security version number, allowing its value to be lowered so an older system image passes version enforcement. Physical device access and low privileges are required; rollback exposes protections present only in newer firmware, and Dell has disclosed no broader consequence.
Summary
What happened
Security-version rollback weakness in Dell ThinOS 10 before 2605_10.2616 allows physically proximate attackers with low privileges to bypass protections. The anti-rollback control stores a mutable security version number, allowing its value to be lowered so an older system image passes version enforcement. Physical device access and low privileges are required; rollback exposes protections present only in newer firmware, and Dell has disclosed no broader consequence.
The record
- CVE
- CVE-2026-81051
- Published
- Sep 10, 2026
- Updated
- Sep 10, 2026
- Vendor
- Dell Technologies
- Product
- Dell ThinOS
- Classifications
- CWE-1328, CAPEC-176, T1601.002
- Attack vector
- physical
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 10, 2026CVE publishedPublication date reported by the CVE source.
- Sep 10, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <2605_10.2616
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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