What is CVE-2026-2686?

CVE-2026-2686 is a critical-severity vulnerability in Seccn Dingcheng G10, classified under Command Injection. CVSS score: 9.8/10. Published 2026-02-19.

How severe is CVE-2026-2686?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Seccn Dingcheng G10

CVE-2026-2686

A security vulnerability has been detected in SECCN Dingcheng G10 3.1.0.181203. This impacts the function qq of the file /cgi-bin/session_login.cgi. The manipulation of the argument User leads to os command injection. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.023 (81.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Seccn Dingcheng G10 — versions 3.1.0.181203

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (related)
cna@vuldb.com (exploit)

Frequently asked questions

What is CVE-2026-2686?: CVE-2026-2686 is a critical-severity vulnerability in Seccn Dingcheng G10, classified under Command Injection. CVSS score: 9.8/10. Published 2026-02-19.
How severe is CVE-2026-2686?: Critical severity. CVSS v3 base score is 9.8 out of 10.