cve.bz

CVE-2021-33582

7.5 highEPSS 3.1%

High (7.5). EPSS 3.1% chance of exploitation in the next 30 days.

Cyrus IMAP before 3.4.2 allows remote attackers to cause a denial of service (multiple-minute daemon hang) via input that is mishandled during hash-table interaction. Because there are many insertions into a single bucket, strcmp becomes slow. This is fixed in 3.4.2, 3.2.8, and 3.0.16.

Severity

CVSS 3.1

7.5 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
3.1% chance of exploitation in the next 30 days; higher than 87% of CVEs (scores of 2026-10-31)
CWE
CWE-407
Published
Modified
Record from
the NVD, synced

Affected

References

Check your stackJSON