CVE-2026-9543
Remote OS command injection in Totolink N300RH Web UI via admpass.
Is CVE-2026-9543 being exploited?
Not confirmed. CVE-2026-9543 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 2.1% probability of exploitation in the next 30 days.
How severe is CVE-2026-9543?
CVE-2026-9543 is rated High with a CVSS score of 8.9. 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-2026-9543?
Not known from our data. No patch reference has been recorded for CVE-2026-9543, 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-2026-9543 affect?
CVE-2026-9543 affects Totolink N300RH firmware 6.1c.1353_B20190305 (Web UI). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-9543?
Apply firmware update when available; disable remote admin; restrict WAN access.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attacker can execute commands on the device via the web management interface, potentially full device compromise and network access.
Immediate action required
- affected6.1c.1353_B20190305
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.