How severe is CVE-2004-2259?

CVE-2004-2259 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2004-2259 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-2259?

CVE-2004-2259 primarily affects Beasts Vsftpd. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-2259?

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

When was CVE-2004-2259 published?

CVE-2004-2259 was published on 2004-12-31 and last updated on 2026-06-16.

CVE-2004-2259

CVE-2004-2259 is a medium-severity vulnerability in Beasts Vsftpd with a CVSS 2.0 base score of 5.0. 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 5.0)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Beasts Vsftpd
Published: 2004-12-31
Last modified: 2026-06-16

Description

vsftpd before 1.2.2, when under heavy load, allows attackers to cause a denial of service (crash) via a SIGCHLD signal during a malloc or free call, which is not re-entrant.

Frequently asked questions

What is CVE-2004-2259?: vsftpd before 1.2.2, when under heavy load, allows attackers to cause a denial of service (crash) via a SIGCHLD signal during a malloc or free call, which is not re-entrant.
How severe is CVE-2004-2259?: CVE-2004-2259 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2004-2259 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-2259?: CVE-2004-2259 primarily affects Beasts Vsftpd. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-2259?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2004-2259 published?: CVE-2004-2259 was published on 2004-12-31 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:beasts:vsftpd:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:beasts:vsftpd:1.2.1:*:*:*:*:*:*:*

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