CVE-2020-28013

HIGH

Exim 4.00-4.94.1 - Heap-based Buffer Overflow via Command Line Argument Parsing

Title source: llm
STIX 2.1

Description

Exim 4 before 4.94.2 allows Heap-based Buffer Overflow because it mishandles "-F '.('" on the command line, and thus may allow privilege escalation from any user to root. This occurs because of the interpretation of negative sizes in strncpy.

References (1)

Core 1

Scores

CVSS v3 7.8
EPSS 0.0039
EPSS Percentile 31.4%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-787
Status published
Products (1)
exim/exim 4.00 - 4.94.2
Published May 06, 2021
Tracked Since Feb 18, 2026