Search/CVE-2021-33582

● CVE — High

CVE-2021-33582

Vendordebian, fedoraproject, cyrusProductdebian linux, fedora, imapDiscoveredSep 1, 2021UpdatedNov 21, 2024

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.

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CVSS v3.1

7.5 HIGH

EPSS

3.09%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

0

sources referencing this CVE

Related IOCs

0

seen in the same coverage

EPSS Trend

Aug 16, 2026 → Sep 11, 2026

▲ 0.02pp

3.07% → 3.09% over 2 tracked changes

CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

ScopeUNCHANGED

ConfidentialityNONE

IntegrityNONE

AvailabilityHIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Connections

4 relationships

Timeline

disclosure → media coverage

Sep 1, 2021

Disclosure — published as a CVE record. · last revised by NVD Nov 21, 2024