How severe is CVE-2011-3372?

CVE-2011-3372 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2011-3372 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-2011-3372?

CVE-2011-3372 affects Cyrus Imapd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-3372?

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-2011-3372 published?

CVE-2011-3372 was published on 2011-12-24 and last updated on 2026-06-16.

CVE-2011-3372

CVE-2011-3372 is a high-severity vulnerability in Cyrus Imapd with a CVSS 2.0 base score of 7.5. 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-287.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Cyrus Imapd
Published: 2011-12-24
Last modified: 2026-06-16

Description

imap/nntpd.c in the NNTP server (nntpd) for Cyrus IMAPd 2.4.x before 2.4.12 allows remote attackers to bypass authentication by sending an AUTHINFO USER command without sending an additional AUTHINFO PASS command.

Frequently asked questions

What is CVE-2011-3372?: imap/nntpd.c in the NNTP server (nntpd) for Cyrus IMAPd 2.4.x before 2.4.12 allows remote attackers to bypass authentication by sending an AUTHINFO USER command without sending an additional AUTHINFO PASS command.
How severe is CVE-2011-3372?: CVE-2011-3372 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2011-3372 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-2011-3372?: CVE-2011-3372 affects Cyrus Imapd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-3372?: 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-2011-3372 published?: CVE-2011-3372 was published on 2011-12-24 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:cyrus:imapd:*:*:*:*:*:*:*:*

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