CVE-2026-82157

Unauthorized access via improper certificate validation

Published Sep 24, 2026 · Updated Sep 24, 2026

Improper certificate validation in Dell ThinOS 10 before SecurityAddon_2605.10.2766_T10 allows physically proximate attackers unauthorized access. Dell has not published the affected validation routine or which certificate property the ThinOS SecurityAddon accepts incorrectly. Exploitation requires unauthenticated adjacent-network access and bypasses a protection mechanism in communications involving the thin client.

CVSS severityUnavailable
Unscored
EPSS probability0.12%
Next 30 days · Oct 20, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Get started

Summary

What happened

Improper certificate validation in Dell ThinOS 10 before SecurityAddon_2605.10.2766_T10 allows physically proximate attackers unauthorized access. Dell has not published the affected validation routine or which certificate property the ThinOS SecurityAddon accepts incorrectly. Exploitation requires unauthenticated adjacent-network access and bypasses a protection mechanism in communications involving the thin client.

The record

CVE
CVE-2026-82157
Published
Sep 24, 2026
Updated
Sep 24, 2026
Vendor
Dell Technologies
Product
Dell ThinOS
Classifications
CWE-295, T1557
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 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.

  1. Affected versionversion=0 <SecurityAddon_2605.10.2766_T10

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Dell Technologies · Dell ThinOSversion=0 <SecurityAddon_2605.10.2766_T10

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
T1557Adversary-in-the-Middle

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

See the directory against your own environment.

Your stack

Check the software in your environment

Get started to see how Hinoki identifies affected software and validates exploitability in your environment.

Get started