CVE-2011-10009

CVE-2011-10009 is a high-severity vulnerability with a CVSS 4.0 base score of 8.7. 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-22.

Key facts

Description

S40 CMS v0.4.2 contains a path traversal vulnerability in its index.php page handler. The p parameter is not properly sanitized, allowing attackers to traverse the file system and access arbitrary files outside the web root. This can be exploited remotely without authentication by appending traversal sequences and a null byte to bypass file extension checks.

Frequently asked questions

What is CVE-2011-10009?
S40 CMS v0.4.2 contains a path traversal vulnerability in its index.php page handler. The p parameter is not properly sanitized, allowing attackers to traverse the file system and access arbitrary files outside the web root. This can be exploited remotely without authentication by appending traversal sequences and a null byte to bypass file extension checks.
How severe is CVE-2011-10009?
CVE-2011-10009 has a CVSS 4.0 base score of 8.7, rated high severity.
Is CVE-2011-10009 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2011-10009?
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-2011-10009 have an EU (EUVD) identifier?
Yes. CVE-2011-10009 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2011-5242.
When was CVE-2011-10009 published?
CVE-2011-10009 was published on 2025-08-13 and last updated on 2026-06-16.

References

Other CWE-22 (Path Traversal) vulnerabilities

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