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TI-2025-07206 Aliases CVE-2025-7882GHSA-36fg-v524-g4r4

Mercusys MW301R Login excessive authentication

Priority LOW 12CWE-307Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-307.

Summary

A vulnerability was found in Mercusys MW301R 1.0.2 Build 190726 Rel.59423n. It has been rated as problematic. This issue affects some unknown processing of the component Login. The manipulation leads to improper restriction of excessive authentication attempts. The attack can only be initiated within the local network. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00333 26th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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
MercusysMW301R1.0.2 Build 190726 Rel.59423n—No fix listedCNA
  • MW301R VendorMercusys Affected 1.0.2 Build 190726 Rel.59423n 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-2025-7882
  2. 2026-10-03 Alias added: GHSA-36fg-v524-g4r4

References

Exploit 1

  • TI-2025-35352 Mercusys MW305R 3.30 and below is has a Transport Layer Security (TLS) certificate private key disclosure. CVSS 3.1MEDIUM 6.8
  • TI-2025-07205 Mercusys MW301R Web Interface password recovery CVSS 4.0MEDIUM 5.1
  • TI-2021-05991 MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ in conjunction with… CVSS 3.1MEDIUM 5.3
  • TI-2022-10208 TP-Link TL-WDR7660 2.0.30, Mercury D196G 20200109_2.0.4, and Fast FAC1900R 20190827_2.0.2… CVSS 3.1HIGH 7.8
  • TI-2022-10207 TP-Link TL-WDR7660 2.0.30, Mercury D196G 20200109_2.0.4, and Fast FAC1900R 20190827_2.0.2… CVSS 3.1HIGH 7.8
  • TI-2021-07878 MERCUSYS Mercury X18G 1.0.5 devices allow Denial of service via a crafted value to the… CVSS 3.1HIGH 7.5
See all 9 →

Sources

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