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TI-2025-06289 Aliases CVE-2025-6916GHSA-hqqv-6f9q-x66q

TOTOLINK T6 formLoginAuth.htm Form_Login missing authentication

Priority HIGH 73CWE-287Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
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-287.

Summary

A vulnerability, which was classified as critical, was found in TOTOLINK T6 4.1.5cu.748_B20211015. This affects the function Form_Login of the file /formLoginAuth.htm. The manipulation of the argument authCode/goURL leads to missing authentication. The attack needs to be initiated within the local network. 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 0.00888 59th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
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
Total

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:-:*:*:*:*:*:*:*not specified by NVDRunning 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:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-6916
  2. 2026-10-03 Alias added: GHSA-hqqv-6f9q-x66q

References

Exploit 1

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-2025-07475 TOTOLINK T6 MQTT Packet meshSlaveDlfw tcpcheck_net buffer overflow 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