CVE-2021-44143
CRITICAL9.8EPSS 10.3%Published: 11/22/2021Modified: 4/28/2026
Also known as:DEBIAN-CVE-2021-44143
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.
Affected packages (1)
- Debian/isyncfrom 0, < 1.4.4-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |