VULNERABILITY INTELLIGENCE

CVE-2021-3578

CVSS score7.8 HIGH
EPSS probability1.04%
CISA KEVNot currently listed
Published2022-02-16
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

A flaw was found in mbsync before v1.3.6 and v1.4.2, 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.

Weakness classification

  • secalert@redhat.com: CWE-704
  • nvd@nist.gov: CWE-704

Primary references