CVE-2026-51672
Unauthenticated info disclosure in TOTOLINK T6 via crafted POST to cgi-bin endpoint.
Is CVE-2026-51672 being exploited?
Not confirmed. CVE-2026-51672 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 0.36% probability of exploitation in the next 30 days.
How severe is CVE-2026-51672?
CVE-2026-51672 is rated Critical with a CVSS score of 9.1. 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-2026-51672?
Not known from our data. No patch reference has been recorded for CVE-2026-51672, 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-2026-51672 affect?
CVE-2026-51672 affects TOTOLINK T6 (firmware 4.1.5cu.748_B20211015). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-51672?
Check vendor firmware page, apply update if available; restrict admin access and block /cgi-bin/ on WAN.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attackers can retrieve the router's roaming enablement flag via a crafted POST to /cgi-bin/cstecgi.cgi, enabling reconnaissance and targeted configuration attacks.
Patch when possible