High severity · published Sep 24, 2026
CVE-2026-81455
Dell ThinOS 10, versions prior to SecurityAddon_2605.10.2766_T10, contain a Missing Authentication for Critical Function vulnerability
8.6
CVSS
0.3%
EPSS
No
On KEV
Description
Dell ThinOS 10, versions prior to SecurityAddon_2605.10.2766_T10, contain a Missing Authentication for Critical Function vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Unauthorized access.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 18% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
T1
ThinOS 10 · Dell
before SecurityAddon_2605.10.2766_T10 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-81455
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-81455
www.dell.com
https://www.dell.com/support/kbdoc/en-us/000506503/dsa-2026-404-security-update-for-dell-thinos-10-for-multiple-vulnerabilities
More from ThinOS 10
9.8
CVE-2026-81467
Dell ThinOS 10, versions prior to 2605_10
9.4
CVE-2026-81046
Dell ThinOS 10, versions prior to 2605_10.2616, contain a Protection Mechanism Failure vulnerability
8.8
CVE-2026-81048
Dell ThinOS 10, versions prior to 2605_10.2616, contain an Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability
8.3
CVE-2026-82157
Dell ThinOS 10, versions prior to SecurityAddon_2605.10.2766_T10, contains an Improper Certificate Validation vulnerability
7.8
CVE-2026-61419
Dell ThinOS 10, versions prior to 2605_10.2518, contain an Improper Access Control vulnerability