What is CVE-2025-55824?

CVE-2025-55824 is a medium-severity vulnerability in Modstart Mostartcms, classified under Command Injection. CVSS score: 6.5/10. Published 2025-09-02.

How severe is CVE-2025-55824?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2025-55824 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Modstart Mostartcms

CVE-2025-55824

ModStartCMS v9.5.0 has an arbitrary file write vulnerability, which allows attackers to write malicious files and execute malicious commands to obtain sensitive data on the server.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.002 (14.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Modstart Mostartcms — versions 9.5.0
N/a — versions n/a

Weakness classification (CWE)

CWE-77 — Command Injection

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-55824?: CVE-2025-55824 is a medium-severity vulnerability in Modstart Mostartcms, classified under Command Injection. CVSS score: 6.5/10. Published 2025-09-02.
How severe is CVE-2025-55824?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2025-55824 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.