Is CVE-2009-4623 being actively exploited?

CVE-2009-4623 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2009-4623?

CVE-2009-4623 has a CVSS 2.0 base score of 7.5 (HIGH).

CVE-2009-4623

HIGH · CVSS 7.5EPSS 15.8%EU EUVD

Multiple PHP remote file inclusion vulnerabilities in Advanced Comment System 1.0 allow remote attackers to execute arbitrary PHP code via a URL in the ACS_path parameter to (1) index.php and (2) admin.php in advanced_comment_system/. NOTE: this might only be a vulnerability when the administrator has not followed installation instructions in install.php. NOTE: this might be the same as CVE-2020-35598.

Key facts

CVSS score: 7.5 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness (CWE): CWE-94
EPSS score: 15.8% (97th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2009-4588)
Published: January 18, 2010
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-4588 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

plohni / advanced comment system

References

http://secunia.com/advisories/36643(Vendor Advisory)
http://www.exploit-db.com/exploits/9623(Exploit, Third Party Advisory, VDB Entry)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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