CVE-2026-81051: Dell ThinOS 10, versions prior to 2605_10.2616, contain a Security Version Number Mutable to Older Versions vu

Q: How do I fix CVE-2026-81051?

thinos: upgrade to 2605_10.2616. Exact commands for each OS are on this page.

Q: Is CVE-2026-81051 being exploited?

CVE-2026-81051 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-81051 affect?

CVE-2026-81051 affects thinos. Severity is medium (CVSS 6.6). Dell ThinOS 10, versions prior to 2605_10.2616, contain a Security Version Number Mutable to Older Versions vulnerability. A low privileged attacker with physical access could potentially exploit this vulnerability, leading to Protection me

Q: How urgent is CVE-2026-81051?

Priority 25/100. No elevated risk signals yet.

Routine

MEDIUM 6.6UPGRADE

CVE-2026-81051 is a medium-severity flaw (CVSS 6.6) affecting thinos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Dell ThinOS 10, versions prior to 2605_10.2616, contain a Security Version Number Mutable to Older Versions vulnerability. A low privileged attacker with physical access could potentially exploit this vulnerability, leading to Protection mechanism bypass.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.6 (Medium)
Attack vector	Physical
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-1328
Published	2026-09-10
Last modified	2026-09-16

Publisher (CNA): Dell · Vendor: dell

Last updated 2026-09-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-10 16:17 UTCPublished CVE record published
2026-09-16 20:50 UTCUpdated Record last modified

dell thinos UPGRADE

Affected: < 2605_10.2616

Fixed in: 2605_10.2616

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-81051?

thinos: upgrade to 2605_10.2616. Exact commands for each OS are on this page.

Is CVE-2026-81051 being exploited?

CVE-2026-81051 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-81051 affect?

CVE-2026-81051 affects thinos. Severity is medium (CVSS 6.6). Dell ThinOS 10, versions prior to 2605_10.2616, contain a Security Version Number Mutable to Older Versions vulnerability. A low privileged attacker with physical access could potentially exploit this vulnerability, leading to Protection me

How urgent is CVE-2026-81051?

Priority 25/100. No elevated risk signals yet.

Software pages

Dell vulnerabilities

Related CVEs

CVE-2026-81046 CRITICAL 9.4 UPGRADE Dell ThinOS 10, versions prior to 2605_10.2616, contain a Protection Mechanism Failure vulnerability
CVE-2026-81048 CRITICAL 9.6 UPGRADE Dell ThinOS 10, versions prior to 2605_10.2616, contain an Improper Neutralization of Special Elements used in
CVE-2026-81049 MEDIUM 4.4 UPGRADE Dell ThinOS 10, versions prior to 2605_10.2616, contain a Missing Support for Integrity Check vulnerability
CVE-2026-81052 MEDIUM 6.8 UPGRADE Dell ThinOS 10, versions prior to 2605_10.2616, contain a Download of Code Without Integrity Check vulnerabili
CVE-2026-81467 CRITICAL 9.8 UPGRADE Dell ThinOS 10, versions prior to 2605_10

References

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