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TI-2025-38956 Aliases CVE-2025-62773GHSA-55w5-976h-wfmc

Mercku M6a devices through 2.1.0 allow TELNET sessions via a router.telnet.enabled.update request by an administrator.

Priority MEDIUM 46CWE-912Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Mercku M6a devices through 2.1.0 allow TELNET sessions via a router.telnet.enabled.update request by an administrator.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00173 6th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
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
MerckuM6aup to 2.1.0—No fix listedCNA
  • M6a VendorMercku Affected up to 2.1.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-62773
  2. 2026-10-03 Alias added: GHSA-55w5-976h-wfmc

References

Other 2

  • TI-2025-38958 Mercku M6a devices through 2.1.0 allow root TELNET logins via the web admin password. CVSS 3.1HIGH 8.0
  • TI-2025-38954 Mercku M6a devices through 2.1.0 allow password changes via intranet CSRF attacks. CVSS 3.1HIGH 7.5
  • TI-2025-38957 On Mercku M6a devices through 2.1.0, the authentication system uses predictable session tokens based on timestamps. CVSS 3.1LOW 3.1
  • TI-2025-38955 On Mercku M6a devices through 2.1.0, session tokens remain valid for at least months in some cases. CVSS 3.1LOW 3.1

Sources

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