VULNERABILITY INTELLIGENCE

CVE-2021-44143

CVSS score9.8 CRITICAL
EPSS probability3.78%
CISA KEVNot currently listed
Published2021-11-22
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

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.

Weakness classification

  • nvd@nist.gov: CWE-787

Primary references