CVE-2026-18615
Remote command injection in GL-iNet GL-MT3000 wg-server via private_key parameter.
Is CVE-2026-18615 being exploited?
Not confirmed. CVE-2026-18615 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-2026-18615?
CVE-2026-18615 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-2026-18615?
Not known from our data. No patch reference has been recorded for CVE-2026-18615, 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-2026-18615 affect?
CVE-2026-18615 affects GL-iNet GL-MT3000 (firmware <= 4.4.5), wg-server.generate_publickey (wg-server.so /cgi-bin/glc). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-18615?
Isolate affected devices, block WAN access to /cgi-bin, disable remote management, apply vendor patch when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote command injection via wg-server.generate_publickey private_key allows arbitrary command execution, full device compromise and network pivot.
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.