VULNERABILITY INTELLIGENCE
CVE-2010-2023
CVSS score4.4 MEDIUM
EPSS probability0.28%
CISA KEVNot currently listed
Published2010-06-07
Last modified2026-06-16
CVSS vectorAV:L/AC:M/Au:N/C:P/I:P/A:P
Description
transports/appendfile.c in Exim before 4.72, when a world-writable sticky-bit mail directory is used, does not verify the st_nlink field of mailbox files, which allows local users to cause a denial of service or possibly gain privileges by creating a hard link to another user's file.
Weakness classification
- CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')