CVE-2020-28019

Published: May 6, 2021Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

Exim 4 before 4.94.2 has Improper Initialization that can lead to recursion-based stack consumption or other consequences. This occurs because use of certain getc functions is mishandled when a client uses BDAT instead of DATA.

Affected (1)

Products: Exim: Exim

Exim

1 product

Exim

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Exim Exim	From 4.88 to 4.94.2

Related CWEs

CWE-665

Improper Initialization

The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used.

References (2)

https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28019-BDATA.txt

Source: cve@mitre.org

Vendor Advisory

https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28019-BDATA.txt

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

Timeline

No history available yet.