CVE-2026-67822
Stack buffer overflow in Tenda W6-S web endpoint enabling remote code execution.
Is CVE-2026-67822 being exploited?
Not confirmed. CVE-2026-67822 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 0.31% probability of exploitation in the next 30 days.
How severe is CVE-2026-67822?
CVE-2026-67822 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-2026-67822?
Not known from our data. No patch reference has been recorded for CVE-2026-67822, 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-2026-67822 affect?
CVE-2026-67822 affects Tenda W6-S (firmware 1.0.0.4(510)), Tenda W6-S consumer routers. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-67822?
Isolate affected devices, restrict web admin access, apply vendor patch when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
HTTP-accessible stack overflow in /goform/wifiSSIDset can allow remote code execution or device crash, enabling network compromise and persistence.
Immediate action required