How severe is CVE-2005-4348?

CVE-2005-4348 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2005-4348 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-4348?

CVE-2005-4348 affects Fetchmail. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2005-4348?

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-2005-4348 published?

CVE-2005-4348 was published on 2005-12-21 and last updated on 2026-06-16.

CVE-2005-4348

CVE-2005-4348 is a high-severity vulnerability in Fetchmail with a CVSS 2.0 base score of 7.8. 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-399.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Fetchmail
Published: 2005-12-21
Last modified: 2026-06-16

Description

fetchmail before 6.3.1 and before 6.2.5.5, when configured for multidrop mode, allows remote attackers to cause a denial of service (application crash) by sending messages without headers from upstream mail servers.

Frequently asked questions

What is CVE-2005-4348?: fetchmail before 6.3.1 and before 6.2.5.5, when configured for multidrop mode, allows remote attackers to cause a denial of service (application crash) by sending messages without headers from upstream mail servers.
How severe is CVE-2005-4348?: CVE-2005-4348 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2005-4348 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-4348?: CVE-2005-4348 affects Fetchmail. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2005-4348?: 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-2005-4348 published?: CVE-2005-4348 was published on 2005-12-21 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:fetchmail:fetchmail:*:*:*:*:*:*:*:*

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CVE-2001-1009 — Critical (CVSS 10.0): Fetchmail (aka fetchmail-ssl) before 5.8.17 allows a remote malicious (1) IMAP server or (2) POP/POP3 server to…
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CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
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