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Samsung mTower lacks access control for TA sessions, allowing a Normal World application to open TA sessions and invoke their commands, or…

5.3MediumCNA
Exploited
No known exploitation
Fix
No fix listed
Who is exposed
Not reported
Published
Last modified
Reference
Last checked
10/100 · provisional
None on Exploit-DB, Metasploit or GitHub

Summary

Samsung mTower, a trusted execution environment component, lacks access control for its trusted applications, so a local application running in the Normal World can open their sessions, invoke their commands, or close existing sessions if it knows their identifiers. The impact depends on which trusted application is affected, and an attacker needs local access with low-privilege login.

Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.

Read the original description

Samsung mTower lacks access control for TA sessions, allowing a Normal World application to open TA sessions and invoke their commands, or use a close existing sessions if thier identifiers are known, The impact depends on the affected TA.

cve.now Index

10Pcve.now Index 10 of 100 · methodology v3 · provisional
  • Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
  • Exposure?/25Unknown. No advisory context yet
  • Reach?/20Unknown. No tracked technology or package matched
  • Severity5.3/10CVSS 5.3
  • No patch5/5No patch listed yet

What would change the score

  • Would score about 65 if added to CISA KEV
  • Would score about 60 if CISA's SSVC rates exploitation active
  • Would score about 32 if advisories confirm default setups are exposed

Check your systems with an agent

Paste this into a coding or ops agent. It checks your systems read-only and reports a table per asset.

Check whether my systems are affected by CVE-2026-125715 (Samsung mTower lacks access control for TA sessions, allowing a Normal World application to open TA sessions and invoke their commands, or…), using the cve.now data below.

Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.

What cve.now has for CVE-2026-125715 (entry last updated 2026-11-10):
Affected:
- Samsung Opensource mTower: version range not reported
Fixed versions: none listed yet.
Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory.
CISA KEV: CVE-2026-125715 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-125715 only. If you also check another CVE, look up its own KEV status; never assume it from this one.

How to check:
- Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory.

Verify against the linked advisories before concluding, and cite the date you read each one:
- https://github.com/Samsung/mTower/commit/97070d65ac63713b188b6e2d6bb7076d95100429
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.

Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action.

Entry: https://cve.now/CVE-2026-125715
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example get_vulnerability with id CVE-2026-125715.

Timeline

  1. CVE published
  2. First seen by cve.now

Affected versions

  • Samsung Opensource mTower

    Version range not reported

Evidence 3

CVE record · 2

Establishes: The identifier and description.

  1. Record
  2. Record

Other links · 1

  1. Repository

Corrections

None so far.

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