PatchTheCVECVE-2024-34055: Cyrus IMAP before 3.8.3 and 3.10.x before 3.10.0-rc1 allows authenticated attackers to cause unbounded memory
CVE-2024-34055 is a medium-severity flaw (CVSS 6.5) affecting cyrus imap. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Cyrus IMAP before 3.8.3 and 3.10.x before 3.10.0-rc1 allows authenticated attackers to cause unbounded memory allocation by sending many LITERALs in a single command.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.5 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.8% (top 42%) |
| CISA exploited list | No |
| Weakness | CWE-770 |
| Published | 2024-06-05 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2024-34055?
cyrus imap: upgrade to 3.8.3. Exact commands for each OS are on this page.
Is CVE-2024-34055 being exploited?
CVE-2024-34055 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2024-34055 affect?
CVE-2024-34055 affects cyrus imap. Severity is medium (CVSS 6.5). Cyrus IMAP before 3.8.3 and 3.10.x before 3.10.0-rc1 allows authenticated attackers to cause unbounded memory allocation by sending many LITERALs in a single command.
How urgent is CVE-2024-34055?
Priority 37/100. No elevated risk signals yet.