How severe is CVE-2009-4623?

CVE-2009-4623 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2009-4623 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4623?

CVE-2009-4623 affects Plohni Advanced Comment System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-4623?

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-2009-4623 published?

CVE-2009-4623 was published on 2010-01-18 and last updated on 2026-06-16.

CVE-2009-4623

CVE-2009-4623 is a high-severity vulnerability in Plohni Advanced Comment System with a CVSS 2.0 base score of 7.5. 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 2.0 base score 7.5)
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Plohni Advanced Comment System
Published: 2010-01-18
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2009-4623?: 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.
How severe is CVE-2009-4623?: CVE-2009-4623 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2009-4623 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4623?: CVE-2009-4623 affects Plohni Advanced Comment System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-4623?: 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-2009-4623 published?: CVE-2009-4623 was published on 2010-01-18 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:plohni:advanced_comment_system:1.0:*:*:*:*:*:*:*

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