How severe is CVE-2010-3304?

CVE-2010-3304 has a CVSS 2.0 base score of 6.4, rated medium severity.

Is CVE-2010-3304 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-3304?

CVE-2010-3304 primarily affects Dovecot. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-3304?

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

When was CVE-2010-3304 published?

CVE-2010-3304 was published on 2010-09-24 and last updated on 2026-06-16.

CVE-2010-3304

CVE-2010-3304 is a medium-severity vulnerability in Dovecot with a CVSS 2.0 base score of 6.4. 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-264.

Key facts

Severity: Medium (CVSS 2.0 base score 6.4)
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Dovecot
Published: 2010-09-24
Last modified: 2026-06-16

Description

The ACL plugin in Dovecot 1.2.x before 1.2.13 propagates INBOX ACLs to newly created mailboxes in certain configurations, which might allow remote attackers to read mailboxes that have unintended weak ACLs.

Frequently asked questions

What is CVE-2010-3304?: The ACL plugin in Dovecot 1.2.x before 1.2.13 propagates INBOX ACLs to newly created mailboxes in certain configurations, which might allow remote attackers to read mailboxes that have unintended weak ACLs.
How severe is CVE-2010-3304?: CVE-2010-3304 has a CVSS 2.0 base score of 6.4, rated medium severity.
Is CVE-2010-3304 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-3304?: CVE-2010-3304 primarily affects Dovecot. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-3304?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-3304 published?: CVE-2010-3304 was published on 2010-09-24 and last updated on 2026-06-16.

References

Affected products (13)

cpe:2.3:a:dovecot:dovecot:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:1.2.2:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:1.2.3:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:1.2.4:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:1.2.5:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:1.2.6:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:1.2.7:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:1.2.8:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:1.2.9:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:1.2.10:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:1.2.11:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:1.2.12:*:*:*:*:*:*:*

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