Read the docs
TI-2026-56218 Aliases CVE-2026-81455GHSA-whqh-fv4r-27g8

Missing authentication in Dell ThinOS 10

Priority MEDIUM 43CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · High · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-306.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00262 18th percentileScored 2026-11-07
Fix Fixed ThinOS 10 (Dell): SecurityAddon_2605.10.2766_T10

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
DellThinOS 10before SecurityAddon_2605.10.2766_T10SecurityAddon_2605.10.2766_T10Patch availableCNA
  • ThinOS 10 VendorDell Affected before SecurityAddon_2605.10.2766_T10 Fixed in SecurityAddon_2605.10.2766_T10 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:o:dell:thinos:*:*:*:*:*:*:*:*——Dell
  • cpe:2.3:o:dell:thinos:*:*:*:*:*:*:*:* Versions — — ·Dell

Remediation

  • Fix · CNA ThinOS 10 (Dell) Fixed in SecurityAddon_2605.10.2766_T10

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Dell ThinOS 10 — dell.com/support/kbdoc/en-us/000506503/dsa-2026-404-securit…

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-56664 Improper certificate validation in Dell ThinOS 10Priority LOW 37
    Show all 2 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-81455
  2. 2026-10-03 Alias added: GHSA-whqh-fv4r-27g8

References

Advisory 1

  • TI-2026-18287 Hard-coded credentials in Dell RecoverPoint for Virtual Machines KEVCVSS 3.1CRITICAL 10.0
  • TI-2021-04636 Dell dbutil_2_3.sys driver contains an insufficient access control vulnerability which… KEVCVSS 3.1HIGH 8.8
  • TI-2025-24909 OS command injection in Dell Unity CVSS 3.1CRITICAL 9.8
  • TI-2018-01121 Dell EMC iDRAC7/iDRAC8, versions prior to 2.52.52.52, contain CGI injection vulnerability… CVSS 3.0CRITICAL 9.8
  • TI-2020-09565 The Treck TCP/IP stack before 6.0.1.66 has an IPv6 Out-of-bounds Read. KEVCVSS 3.1MEDIUM 5.4
  • TI-2022-08298 Improper authentication in Dell Integrated Dell Remote Access Controller 9 CVSS 3.1CRITICAL 9.8
See all 2081 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences