What is CVE-2018-14421?

CVE-2018-14421 is a high-severity vulnerability in Seacms, classified under Code Injection. CVSS score: 8.8/10. Published 2018-07-20.

How severe is CVE-2018-14421?

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

RCE in Seacms

CVE-2018-14421

SeaCMS v6.61 allows Remote Code execution by placing PHP code in a movie picture address (aka v_pic) to /admin/admin_video.php (aka /backend/admin_video.php). The code is executed by visiting /details/index.php. This can also be exploited through CSRF.

Vulnerability class: RCE (Remote Code Execution)

Published 2018-07-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (57.9th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Seacms — versions 6.61

Weakness classification (CWE)

References

hexo.imagemlt.xyz/post/seacms-backend-getshell/index.html (Third Party Advisory)

Frequently asked questions

What is CVE-2018-14421?: CVE-2018-14421 is a high-severity vulnerability in Seacms, classified under Code Injection. CVSS score: 8.8/10. Published 2018-07-20.
How severe is CVE-2018-14421?: High severity. CVSS v3 base score is 8.8 out of 10.