CVE-2026-5850
Router CGI vulnerability enables remote OS command injection.
Is CVE-2026-5850 being exploited?
Not confirmed. CVE-2026-5850 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 15% probability of exploitation in the next 30 days.
How severe is CVE-2026-5850?
CVE-2026-5850 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-2026-5850?
Not known from our data. No patch reference has been recorded for CVE-2026-5850, 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-2026-5850 affect?
CVE-2026-5850 affects Totolink A7100RU router, cgi-bin/cstecgi.cgi (setVpnPassCfg), Totolink firmware 7.4cu.2313_b20191024. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-5850?
Apply firmware update ASAP; disable vulnerable CGI or isolate device until patched.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via CGI; attacker can run OS commands and take control of the router.
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.