CVE-2021-44143
9.8
CRITICAL
CVSS 3.1
EPSS 10.3%
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.
How to fix CVE-2021-44143
To remediate CVE-2021-44143, upgrade the affected package to a fixed version below.
- Debian/isync—upgrade to 1.4.4-1 or later
Is CVE-2021-44143 being exploited?
Moderate — EPSS is 10.3%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (1)
- from 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 |