How severe is CVE-2006-0321?

CVE-2006-0321 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2006-0321 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-0321?

CVE-2006-0321 primarily affects Fetchmail. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-0321?

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

When was CVE-2006-0321 published?

CVE-2006-0321 was published on 2006-01-24 and last updated on 2026-06-16.

CVE-2006-0321

CVE-2006-0321 is a medium-severity vulnerability in Fetchmail 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. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Fetchmail
Published: 2006-01-24
Last modified: 2026-06-16

Description

fetchmail 6.3.0 and other versions before 6.3.2 allows remote attackers to cause a denial of service (crash) via crafted e-mail messages that cause a free of an invalid pointer when fetchmail bounces the message to the originator or local postmaster.

Frequently asked questions

What is CVE-2006-0321?: fetchmail 6.3.0 and other versions before 6.3.2 allows remote attackers to cause a denial of service (crash) via crafted e-mail messages that cause a free of an invalid pointer when fetchmail bounces the message to the originator or local postmaster.
How severe is CVE-2006-0321?: CVE-2006-0321 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2006-0321 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-0321?: CVE-2006-0321 primarily affects Fetchmail. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-0321?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-0321 published?: CVE-2006-0321 was published on 2006-01-24 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:fetchmail:fetchmail:6.3.0:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:6.3.1:*:*:*:*:*:*:*

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