How severe is CVE-2009-3542?

CVE-2009-3542 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2009-3542 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-3542?

CVE-2009-3542 affects Kneuro Littlesite.php. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-3542?

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-2009-3542 published?

CVE-2009-3542 was published on 2009-10-02 and last updated on 2026-06-16.

CVE-2009-3542

CVE-2009-3542 is a high-severity vulnerability in Kneuro Littlesite.php 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-22.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Kneuro Littlesite.php
Published: 2009-10-02
Last modified: 2026-06-16

Description

Directory traversal vulnerability in ls.php in LittleSite (aka LS or LittleSite.php) 0.1 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the file parameter to index.php. NOTE: in some environments, this can be leveraged for remote file inclusion by using a UNC share pathname or an ftp, ftps, or ssh2.sftp URL.

Frequently asked questions

What is CVE-2009-3542?: Directory traversal vulnerability in ls.php in LittleSite (aka LS or LittleSite.php) 0.1 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the file parameter to index.php. NOTE: in some environments, this can be leveraged for remote file inclusion by using a UNC share pathname or an ftp, ftps, or ssh2.sftp URL.
How severe is CVE-2009-3542?: CVE-2009-3542 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2009-3542 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-3542?: CVE-2009-3542 affects Kneuro Littlesite.php. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-3542?: 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-2009-3542 published?: CVE-2009-3542 was published on 2009-10-02 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:kneuro:littlesite.php:0.1:*:*:*:*:*:*:*

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