How severe is CVE-2008-4907?

CVE-2008-4907 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2008-4907 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-4907?

CVE-2008-4907 primarily affects Dovecot. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-4907?

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

When was CVE-2008-4907 published?

CVE-2008-4907 was published on 2008-11-04 and last updated on 2026-06-16.

CVE-2008-4907

CVE-2008-4907 is a medium-severity vulnerability in Dovecot with a CVSS 2.0 base score of 4.3. 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 4.3)
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Dovecot
Published: 2008-11-04
Last modified: 2026-06-16

Description

The message parsing feature in Dovecot 1.1.4 and 1.1.5, when using the FETCH ENVELOPE command in the IMAP client, allows remote attackers to cause a denial of service (persistent crash) via an email with a malformed From address, which triggers an assertion error, aka "invalid message address parsing bug."

Frequently asked questions

What is CVE-2008-4907?: The message parsing feature in Dovecot 1.1.4 and 1.1.5, when using the FETCH ENVELOPE command in the IMAP client, allows remote attackers to cause a denial of service (persistent crash) via an email with a malformed From address, which triggers an assertion error, aka "invalid message address parsing bug."
How severe is CVE-2008-4907?: CVE-2008-4907 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2008-4907 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-4907?: CVE-2008-4907 primarily affects Dovecot. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-4907?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-4907 published?: CVE-2008-4907 was published on 2008-11-04 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:dovecot:dovecot:1.1.4:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:1.1.5:*:*:*:*:*:*:*

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