CVE-2026-51681
Unauthenticated POST can enable WAN-side admin on TOTOLINK T6 router.
Is CVE-2026-51681 being exploited?
Not confirmed. CVE-2026-51681 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 0.29% probability of exploitation in the next 30 days.
How severe is CVE-2026-51681?
CVE-2026-51681 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-2026-51681?
Yes. A fix has been recorded for CVE-2026-51681. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-51681 affect?
CVE-2026-51681 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-2026-51681?
Apply vendor firmware update, disable remote admin, block WAN management ports.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attacker can enable WAN admin via crafted POST, gain remote admin access, modify config, and enable persistent network compromise.
Immediate action required