How severe is CVE-2009-4103?

CVE-2009-4103 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2009-4103 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-2009-4103?

CVE-2009-4103 affects Robo-ftp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-4103?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2009-4103 published?

CVE-2009-4103 was published on 2009-11-29 and last updated on 2026-06-16.

CVE-2009-4103

CVE-2009-4103 is a critical-severity vulnerability in Robo-ftp with a CVSS 2.0 base score of 9.3. 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-119.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Robo-ftp
Published: 2009-11-29
Last modified: 2026-06-16

Description

Buffer overflow in Robo-FTP 3.6.17, and possibly other versions, allows remote FTP servers to cause a denial of service and possibly execute arbitrary code via unspecified FTP server responses. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Frequently asked questions

What is CVE-2009-4103?: Buffer overflow in Robo-FTP 3.6.17, and possibly other versions, allows remote FTP servers to cause a denial of service and possibly execute arbitrary code via unspecified FTP server responses. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
How severe is CVE-2009-4103?: CVE-2009-4103 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2009-4103 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-2009-4103?: CVE-2009-4103 affects Robo-ftp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-4103?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2009-4103 published?: CVE-2009-4103 was published on 2009-11-29 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:robo-ftp:robo-ftp:3.6.17:*:*:*:*:*:*:*

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