How severe is CVE-2009-4090?

CVE-2009-4090 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2009-4090 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4090?

CVE-2009-4090 affects Telepark Telepark.wiki. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-4090?

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-2009-4090 published?

CVE-2009-4090 was published on 2009-11-29 and last updated on 2026-06-16.

CVE-2009-4090

CVE-2009-4090 is a high-severity vulnerability in Telepark Telepark.wiki 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-20.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Telepark Telepark.wiki
Published: 2009-11-29
Last modified: 2026-06-16

Description

Unrestricted file upload vulnerability in ajax/addComment.php in telepark.wiki 2.4.23 and earlier script allows remote attackers to execute arbitrary code by uploading a file with a name containing a NULL byte.

Frequently asked questions

What is CVE-2009-4090?: Unrestricted file upload vulnerability in ajax/addComment.php in telepark.wiki 2.4.23 and earlier script allows remote attackers to execute arbitrary code by uploading a file with a name containing a NULL byte.
How severe is CVE-2009-4090?: CVE-2009-4090 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2009-4090 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4090?: CVE-2009-4090 affects Telepark Telepark.wiki. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-4090?: 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-2009-4090 published?: CVE-2009-4090 was published on 2009-11-29 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:telepark:telepark.wiki:*:*:*:*:*:*:*:*

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