CVE-2026-51725: TOTOLINK T6 firmware · CVE-2026-51725 is a critical
Source CVE Database V5
Not known to be exploited · CVSS 9.1 Critical.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 43% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 31 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
AI-suggested
Until an official fix is released, restrict network access to the device management interface and monitor for suspicious POST requests to /cgi-bin/cstecgi.cgi. Avoid exposing the device to untrusted networks.
Description
CVE-2026-51725 is a critical vulnerability in TOTOLINK T6 firmware version 4.1.5cu.748_B20211015. It involves incorrect access control in the NTPSyncWithHost function, allowing unauthenticated attackers to change the device clock by sending a crafted POST request to /cgi-bin/cstecgi.cgi. This vulnerability has a high impact on confidentiality and integrity but does not affect availability. No official patch or remediation guidance is currently available.
References
- totolink.net/home/menu/detail/menu_listtpl/download/id/190/ids/36.html (opens in a new tab)
- totolink.net (opens in a new tab)
- github.com/DarkBoulder/CVE-Vendor-Coordination/blob/main/TOTOLINK/README.md (opens in a new tab)
- github.com/ShengWu00/CVE-Vendor-Coordination/blob/main/TOTOLINK/README.md (opens in a new tab)