CVE-2025-50691Public exploit

Root daemon access via world-readable authentication key

Published Aug 22, 2025 · Updated Aug 22, 2025

Privilege escalation in MCSManager 10.5.3 allows local users to gain daemon access as root by reading its stored key. The Linux installation leaves the MCSManager data tree mode 0755, allowing any local account to read daemon/data/Config/global.json, which stores the daemon authentication key. Exploitation requires a local system account; the exposed key grants control of the root-run daemon and its managed terminal instances.

CVSS severity5.3
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in MCSManager 10.5.3 allows local users to gain daemon access as root by reading its stored key. The Linux installation leaves the MCSManager data tree mode 0755, allowing any local account to read daemon/data/Config/global.json, which stores the daemon authentication key. Exploitation requires a local system account; the exposed key grants control of the root-run daemon and its managed terminal instances.

The record

CVE
CVE-2025-50691
Published
Aug 22, 2025
Updated
Aug 22, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-266, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment
T1552.001Unsecured Credentials: Credentials In Files

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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