cvedb.io
CVE-2021-44143
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2021-11-22T20:15:18.223 · Last modified 2026-06-17T04:11:56.860

Summary

A flaw was found in mbsync in isync 1.4.0 through 1.4.3. Due to an unchecked condition, a malicious or compromised IMAP server could use a crafted mail message that lacks headers (i.e., one that starts with an empty line) to provoke a heap overflow, which could conceivably be exploited for remote code execution.

Affected products

isync_project — isync

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.