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TI-2025-07475 Aliases CVE-2025-8170GHSA-h7jx-x34c-vc7c

TOTOLINK T6 MQTT Packet meshSlaveDlfw tcpcheck_net buffer overflow

Priority HIGH 71CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

A vulnerability classified as critical was found in TOTOLINK T6 4.1.5cu.748_B20211015. This vulnerability affects the function tcpcheck_net of the file /router/meshSlaveDlfw of the component MQTT Packet Handler. The manipulation of the argument serverIp leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01305 70th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
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
TOTOLINKT64.1.5cu.748_B20211015—No fix listedCNA
  • T6 VendorTOTOLINK Affected 4.1.5cu.748_B20211015 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:totolink:t6_firmware:v4.1.5cu.748_b20211015:*:*:*:*:*:*:*v4.1.5cu.748_b20211015VulnerableTOTOLINK
cpe:2.3:h:totolink:t6:3:*:*:*:*:*:*:*3Running onTOTOLINK
  • cpe:2.3:o:totolink:t6_firmware:v4.1.5cu.748_b20211015:*:*:*:*:*:*:* Versions v4.1.5cu.748_b20211015 Vulnerable ·TOTOLINK
  • cpe:2.3:h:totolink:t6:3:*:*:*:*:*:*:* Versions 3 Running on ·TOTOLINK

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-8170
  2. 2026-10-03 Alias added: GHSA-h7jx-x34c-vc7c

References

Exploit 2

Other 1

  • TI-2023-06605 Totolink T6 HTTP POST Request main buffer overflow CVSS 3.1CRITICAL 9.8
  • TI-2025-07237 TOTOLINK T6 MQTT Service updateWifiInfo buffer overflow CVSS 4.0HIGH 8.7
  • TI-2025-07236 TOTOLINK T6 MQTT Service recvSlaveUpgstatus buffer overflow CVSS 4.0HIGH 8.7
  • TI-2025-07083 TOTOLINK T6 HTTP POST Request cstecgi.cgi setDiagnosisCfg buffer overflow CVSS 4.0HIGH 8.7
  • TI-2025-06798 TOTOLINK T6 HTTP POST Request cstecgi.cgi setWiFiAclRules buffer overflow CVSS 4.0HIGH 8.7
  • TI-2025-06289 TOTOLINK T6 formLoginAuth.htm Form_Login missing authentication CVSS 4.0HIGH 8.7
See all 38 →

Sources

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