CVE-2026-51705
Unauthenticated attacker can rename mesh entries on TOTOLINK T6 via crafted POST.
Is CVE-2026-51705 being exploited?
Not confirmed. CVE-2026-51705 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.44% probability of exploitation in the next 30 days.
How severe is CVE-2026-51705?
CVE-2026-51705 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-51705?
Not known from our data. No patch reference has been recorded for CVE-2026-51705, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-51705 affect?
CVE-2026-51705 affects TOTOLINK T6 (firmware 4.1.5cu.748_B20211015), /cgi-bin/cstecgi.cgi endpoint, TOTOLINK home/SMB mesh routers. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-51705?
Isolate affected devices, block admin CGI, restrict remote access, apply firmware when vendor releases patch.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated remote config change: attackers can rename mesh entries via /cgi-bin/cstecgi.cgi, enabling network spoofing, phishing, misconfig and potential lateral access.
Immediate action required