CVE-2006-5867

CVE-2006-5867 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-20.

Key facts

Description

fetchmail before 6.3.6-rc4 does not properly enforce TLS and may transmit cleartext passwords over unsecured links if certain circumstances occur, which allows remote attackers to obtain sensitive information via man-in-the-middle (MITM) attacks.

Frequently asked questions

What is CVE-2006-5867?
fetchmail before 6.3.6-rc4 does not properly enforce TLS and may transmit cleartext passwords over unsecured links if certain circumstances occur, which allows remote attackers to obtain sensitive information via man-in-the-middle (MITM) attacks.
How severe is CVE-2006-5867?
CVE-2006-5867 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2006-5867 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-5867?
CVE-2006-5867 primarily affects Fetchmail. In total, 109 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-5867?
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-2006-5867 published?
CVE-2006-5867 was published on 2006-12-31 and last updated on 2026-06-16.

References

Affected products (109)

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