CVE-2026-7719
Buffer overflow in Totolink WA300 login handler (http_host) enabling remote compromise.
Is CVE-2026-7719 being exploited?
Not confirmed. CVE-2026-7719 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 0.62% probability of exploitation in the next 30 days.
How severe is CVE-2026-7719?
CVE-2026-7719 is rated High. 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-2026-7719?
Not known from our data. No patch reference has been recorded for CVE-2026-7719, 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-2026-7719 affect?
CVE-2026-7719 affects Totolink WA300 (firmware 5.2cu.7112_B20190227). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-7719?
Update firmware when patched; disable remote CGI access; monitor for exploitation.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via crafted http_host in POST to /cgi-bin/cstecgi.cgi; attacker could take full control of the device.
Immediate action required
- affected5.2cu.7112_B20190227
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.