vulnerability
Arch Linux: Arbitrary code execution (CVE-2021-3578)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:N/C:C/I:C/A:C) | Feb 16, 2022 | Jul 11, 2025 | Mar 25, 2026 |
Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
Feb 16, 2022
Added
Jul 11, 2025
Modified
Mar 25, 2026
Description
A security issue was found in mbsync before version 1.4.2, where an unchecked pointer cast allows a malicious or compromised server to write an arbitrary integer value past the end of a heap-allocated structure by issuing an unexpected APPENDUID response. This could be plausibly exploited for remote code execution on the client.
Solution
arch-linux-upgrade-latest
References
Rapid7 Labs
2026 Global Threat Landscape Report
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