CVE-2026-18685CWE-74CWE-77command-injection

CVE-2026-18685

Critical · published August 4, 2026

CVSS v3.1
9.8
EPSS
4%
Percentile
89.5
In the wild
Unconfirmed
What it is

A security vulnerability has been detected in GL.iNet GL-MT3000 up to 4.4.5. Impacted is the function set_upgrade of the file /cgi-bin/glc of the component modem.so. Such manipulation leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.03616 · 89.5th percentile
Weaknesses
CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'); CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published
2026-08-04T04:16Z
References (5)
https://vuldb.com/vuln/385611 · [email protected]https://vuldb.com/vuln/385611/cti · [email protected]https://github.com/StrTzz123/iot_vul/tree/main/GL-iNet/MT3000/4.4.5/modem_set_upgrade_glc_rce · [email protected]https://vuldb.com/submit/851593 · [email protected]https://vuldb.com/cve/CVE-2026-18685 · [email protected]
EPSS history
Timeline
  • 03 AUG 23:15Z
    GL.iNet GL-MT3000 modem.so glc set_upgrade command injection
    cvelistv5