How severe is CVE-2009-4451?

CVE-2009-4451 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2009-4451 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-2009-4451?

CVE-2009-4451 affects Php.html Kandalf Upper. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-4451?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-4451 published?

CVE-2009-4451 was published on 2009-12-29 and last updated on 2026-06-16.

CVE-2009-4451

CVE-2009-4451 is a medium-severity vulnerability in Php.html Kandalf Upper with a CVSS 2.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Php.html Kandalf Upper
Published: 2009-12-29
Last modified: 2026-06-16

Description

Unrestricted file upload vulnerability in upper.php in kandalf upper 0.1 allows remote attackers to execute arbitrary code by uploading a file with an executable extension, then accessing it via a direct request to the file in fileup/.

Frequently asked questions

What is CVE-2009-4451?: Unrestricted file upload vulnerability in upper.php in kandalf upper 0.1 allows remote attackers to execute arbitrary code by uploading a file with an executable extension, then accessing it via a direct request to the file in fileup/.
How severe is CVE-2009-4451?: CVE-2009-4451 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2009-4451 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-2009-4451?: CVE-2009-4451 affects Php.html Kandalf Upper. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-4451?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-4451 published?: CVE-2009-4451 was published on 2009-12-29 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:php.html:kandalf_upper:0.1:*:*:*:*:*:*:*