How severe is CVE-2018-14421?

CVE-2018-14421 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-14421 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-14421?

CVE-2018-14421 affects Seacms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-14421?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-14421 published?

CVE-2018-14421 was published on 2018-07-20 and last updated on 2026-06-17.

CVE-2018-14421

CVE-2018-14421 is a high-severity vulnerability in Seacms with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Seacms
Published: 2018-07-20
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2018-14421?: CVE-2018-14421 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-14421 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-14421?: CVE-2018-14421 affects Seacms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-14421?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-14421 published?: CVE-2018-14421 was published on 2018-07-20 and last updated on 2026-06-17.

References

http://hexo.imagemlt.xyz/post/seacms-backend-getshell/index.html

Affected products (1)

cpe:2.3:a:seacms:seacms:6.61:*:*:*:*:*:*:*

More vulnerabilities in Seacms

CVE-2025-44073 — Critical (CVSS 9.8): SeaCMS v13.3 was discovered to contain a SQL injection vulnerability via the component admin_comment_news.php.
CVE-2025-44074 — Critical (CVSS 9.8): SeaCMS v13.3 was discovered to contain a SQL injection vulnerability via the component admin_topic.php.
CVE-2025-44072 — Critical (CVSS 9.8): SeaCMS v13.3 was discovered to contain a SQL injection vulnerability via the component admin_manager.php.
CVE-2025-44071 — Critical (CVSS 9.8): SeaCMS v13.3 was discovered to contain a remote code execution (RCE) vulnerability via the component phomebak.php. This…
CVE-2025-29647 — Critical (CVSS 9.8): SeaCMS v13.3 has a SQL injection vulnerability in the component admin_tempvideo.php.
CVE-2025-25521 — Critical (CVSS 9.8): Seacms <=13.3 is vulnerable to SQL Injection in admin_type_news.php.

All CVEs affecting Seacms →

Other CWE-94 (Code Injection) vulnerabilities

CVE-2026-57624 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in Blocksy Companion Pro <= 2.1.46 versions.
CVE-2026-10134 — Critical (CVSS 10.0): IBM Langflow OSS 1.0.0 through 1.9.3 allows an attacker to read every secret available to the Langflow process, read…
CVE-2026-53576 — Critical (CVSS 10.0): Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the authentication filter…
CVE-2026-10561 — Critical (CVSS 10.0): IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined…
CVE-2026-25470 — Critical (CVSS 10.0): Improper Control of Generation of Code ('Code Injection') vulnerability in ACPT ACPT (Pro) - Custom Post Types Plugin…
CVE-2026-48836 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in Easy Invoice <= 2.1.19 versions.

Browse all CWE-94 (Code Injection) vulnerabilities →