How severe is CVE-2024-40520?

CVE-2024-40520 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-40520 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-40520?

CVE-2024-40520 affects Seacms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-40520?

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.

Does CVE-2024-40520 have an EU (EUVD) identifier?

Yes. CVE-2024-40520 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38499.

When was CVE-2024-40520 published?

CVE-2024-40520 was published on 2024-07-12 and last updated on 2026-06-17.

CVE-2024-40520

CVE-2024-40520 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-20.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-38499
Weakness: CWE-20
Affected product: Seacms
Published: 2024-07-12
Last modified: 2026-06-17

Description

SeaCMS 12.9 has a remote code execution vulnerability. The vulnerability is caused by admin_config_mark.php directly splicing and writing the user input data into inc_photowatermark_config.php without processing it, which allows authenticated attackers to exploit the vulnerability to execute arbitrary commands and obtain system permissions.

Frequently asked questions

What is CVE-2024-40520?: SeaCMS 12.9 has a remote code execution vulnerability. The vulnerability is caused by admin_config_mark.php directly splicing and writing the user input data into inc_photowatermark_config.php without processing it, which allows authenticated attackers to exploit the vulnerability to execute arbitrary commands and obtain system permissions.
How severe is CVE-2024-40520?: CVE-2024-40520 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-40520 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-40520?: CVE-2024-40520 affects Seacms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-40520?: 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.
Does CVE-2024-40520 have an EU (EUVD) identifier?: Yes. CVE-2024-40520 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38499.
When was CVE-2024-40520 published?: CVE-2024-40520 was published on 2024-07-12 and last updated on 2026-06-17.

References

https://gitee.com/fushuling/cve/blob/master/SeaCMS%2012.9%20admin_config_mark.php%20code%20injection.md

Affected products (1)

cpe:2.3:a:seacms:seacms:12.9:*:*:*:*:*:*:*

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