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VulnerabilityPublished Updated

CVE-2025-55824: ModStartCMS · Command Injection

Source CVE Database V5

0

Not known to be exploited · CVSS 6.5 Medium.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 16% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 2 Sep 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

AI-suggested

Organizations should immediately verify if they are running ModStartCMS version 9.5.0 and prioritize upgrading to a patched version once available. In the absence of an official patch, temporary mitigations include restricting write permissions on directories accessible by the CMS to prevent unauthorized file uploads. Implementing web application firewalls (WAFs) with rules to detect and block suspicious file upload patterns or command injection attempts can reduce exposure. Regularly auditing server logs for unusual file creation or execution activities is recommended. Additionally, isolating the CMS environment using network segmentation can limit the impact of a successful exploit. Organizations should also enforce strict input validation and sanitization on any user inputs processed by the CMS to reduce injection risks. Finally, maintaining up-to-date backups and having an incident response plan tailored to web application compromises will aid in rapid recovery if exploitation occurs.

Description

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.

References

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