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TI-2025-38957 Aliases CVE-2025-62774GHSA-7r3h-69g8-3vqv

On Mercku M6a devices through 2.1.0, the authentication system uses predictable session tokens based on timestamps.

Priority MEDIUM 48CWE-331Published · Updated

Key facts

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

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

Summary

On Mercku M6a devices through 2.1.0, the authentication system uses predictable session tokens based on timestamps.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00187 8th 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-2025-62774
  2. 2026-10-03 Alias added: GHSA-7r3h-69g8-3vqv

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-2025-38955 On Mercku M6a devices through 2.1.0, session tokens remain valid for at least months in some cases. CVSS 3.1LOW 3.1
  • TI-2025-38956 Mercku M6a devices through 2.1.0 allow TELNET sessions via a router.telnet.enabled.update request by an administrator. CVSS 3.1LOW 2.4

Sources

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