How severe is CVE-2009-4775?

CVE-2009-4775 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2009-4775 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4775?

CVE-2009-4775 primarily affects Ipswitch Ws Ftp. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-4775?

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

When was CVE-2009-4775 published?

CVE-2009-4775 was published on 2010-04-21 and last updated on 2026-06-16.

CVE-2009-4775

CVE-2009-4775 is a medium-severity vulnerability in Ipswitch Ws Ftp with a CVSS 2.0 base score of 4.3. 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-134.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-134
Affected product: Ipswitch Ws Ftp
Published: 2010-04-21
Last modified: 2026-06-16

Description

Format string vulnerability in Ipswitch WS_FTP Professional 12 before 12.2 allows remote attackers to cause a denial of service (crash) via format string specifiers in the status code portion of an HTTP response.

Frequently asked questions

What is CVE-2009-4775?: Format string vulnerability in Ipswitch WS_FTP Professional 12 before 12.2 allows remote attackers to cause a denial of service (crash) via format string specifiers in the status code portion of an HTTP response.
How severe is CVE-2009-4775?: CVE-2009-4775 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2009-4775 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4775?: CVE-2009-4775 primarily affects Ipswitch Ws Ftp. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-4775?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-4775 published?: CVE-2009-4775 was published on 2010-04-21 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:ipswitch:ws_ftp:12.0:-:home:*:*:*:*:*
cpe:2.3:a:ipswitch:ws_ftp:12.0:-:pro:*:*:*:*:*
cpe:2.3:a:ipswitch:ws_ftp:12.0.1:-:home:*:*:*:*:*
cpe:2.3:a:ipswitch:ws_ftp:12.0.1:-:pro:*:*:*:*:*

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