CVE-2021-32056
MEDIUMCVSS 4.3/10EPSS 1.70%
Last modified
CVE-2021-32056 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Cyrus IMAP before 3.2.7, and 3.3.x and 3.4.x before 3.4.1, allows remote authenticated users to bypass intended access restrictions on server annotations and consequently cause replication to stall.. EPSS estimates a 1.70% chance of exploitation in the next 30 days.
Description
Cyrus IMAP before 3.2.7, and 3.3.x and 3.4.x before 3.4.1, allows remote authenticated users to bypass intended access restrictions on server annotations and consequently cause replication to stall.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cyrus | Imap | < 3.2.7 |
| Cyrus | Imap | >= 3.3.0, < 3.4.1 |
| Fedoraproject | Fedora | 34 |
| Fedoraproject | Fedora | 35 |
References
- https://cyrus.topicbox.com/groups/announce/T056901c106ecfce3/cyrus-imap-3-4-1-releasedPatch, Release Notes, Vendor Advisory
- https://cyrus.topicbox.com/groups/announce/T126392718bc29d6b/cyrus-imap-3-2-7-releasedPatch, Release Notes, Vendor Advisory
- https://www.cyrusimap.org/imap/download/release-notes/3.2/x/3.2.7.htmlPatch, Release Notes, Vendor Advisory
- https://www.cyrusimap.org/imap/download/release-notes/3.4/x/3.4.1.htmlPatch, Release Notes, Vendor Advisory
- https://cyrus.topicbox.com/groups/announce/T056901c106ecfce3/cyrus-imap-3-4-1-releasedPatch, Release Notes, Vendor Advisory
- https://cyrus.topicbox.com/groups/announce/T126392718bc29d6b/cyrus-imap-3-2-7-releasedPatch, Release Notes, Vendor Advisory
- https://www.cyrusimap.org/imap/download/release-notes/3.2/x/3.2.7.htmlPatch, Release Notes, Vendor Advisory
- https://www.cyrusimap.org/imap/download/release-notes/3.4/x/3.4.1.htmlPatch, Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-32056?
Cyrus IMAP before 3.2.7, and 3.3.x and 3.4.x before 3.4.1, allows remote authenticated users to bypass intended access restrictions on server annotations and consequently cause replication to stall.
How severe is CVE-2021-32056?
CVE-2021-32056 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 1.70% probability of exploitation in the next 30 days.
How do I fix CVE-2021-32056?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-32056?
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