What is CVE-2026-12187?

CVE-2026-12187 is a high-severity vulnerability, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.8/10. Published 2026-06-14.

How severe is CVE-2026-12187?

High severity. CVSS v3 base score is 8.8 out of 10.

CVE-2026-12187

CVE-2026-12187

A security vulnerability has been detected in GL.iNet GL-MT3000 up to 4.4.5. Affected by this vulnerability is an unknown functionality of the file /usr/bin/one_click_upgrade of the component Online Firmware Upgrade Handler. Such manipulat…

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)
CWE-77 — Command Injection

References

cna@vuldb.com
cna@vuldb.com
cna@vuldb.com
cna@vuldb.com
cna@vuldb.com
cna@vuldb.com

Frequently asked questions

What is CVE-2026-12187?: CVE-2026-12187 is a high-severity vulnerability, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.8/10. Published 2026-06-14.
How severe is CVE-2026-12187?: High severity. CVSS v3 base score is 8.8 out of 10.