CVE-2026-18602
Remote command injection in GL.iNet GL-MT3000 ovpn-client allowing remote RCE.
Is CVE-2026-18602 being exploited?
Not confirmed. CVE-2026-18602 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 2.0% probability of exploitation in the next 30 days.
How severe is CVE-2026-18602?
CVE-2026-18602 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-2026-18602?
Not known from our data. No patch reference has been recorded for CVE-2026-18602, 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-2026-18602 affect?
CVE-2026-18602 affects GL.iNet GL-MT3000 (firmware ≤ 4.4.5), ovpn-client.so (ovpn-client Native Plugin), /cgi-bin/glc web interface. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-18602?
Isolate devices, block /cgi-bin/glc, restrict management access, apply vendor firmware patch when available.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote command execution on affected GL-MT3000 via ovpn-client Hostname injection; device compromise and lateral network access possible.
Immediate action required
- affected4.4.0
- affected4.4.1
- affected4.4.2
- affected4.4.3
- affected4.4.4
- affected4.4.5
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.