CVE-2026-5997
OS command injection via /cgi-bin/cstecgi.cgi on Totolink A7100RU (remote)
Is CVE-2026-5997 being exploited?
Not confirmed. CVE-2026-5997 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 1.8% probability of exploitation in the next 30 days.
How severe is CVE-2026-5997?
CVE-2026-5997 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-2026-5997?
Not known from our data. No patch reference has been recorded for CVE-2026-5997, 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-2026-5997 affect?
CVE-2026-5997 affects Totolink A7100RU (7.4cu.2313_b20191024) CGI Handler /cgi-bin/cstecgi.cgi. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-5997?
Apply firmware update when available; disable remote CGI access; monitor traffic.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote OS command execution via admpass in CGI, enabling arbitrary commands on the device.
Immediate action required
- affected7.4cu.2313_b20191024
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.