Back to Database
Status published
High
CVE-2020-28009
Exim 4 before 4.94.2 allows Integer Overflow to Buffer Overflow...
Vulnerability Description
Exim 4 before 4.94.2 allows Integer Overflow to Buffer Overflow because get_stdinput allows unbounded reads that are accompanied by unbounded increases in a certain size variable. NOTE: exploitation may be impractical because of the execution time needed to overflow (multiple days).
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-28009
Credits & Attribution
No credits recorded in the NVD database.
More from exim
View All →CVE-2022-37452
Exim before 4.95 has a heap-based buffer overflow for the...
Critical
9.8
CVE-2022-37451
Exim before 4.96 has an invalid free in pam_converse in...
High
7.5
CVE-2021-38371
The STARTTLS feature in Exim through 4.94.2 allows response injection...
High
7.5
CVE-2021-27216
Exim 4 before 4.94.2 has Execution with Unnecessary Privileges. By...
Medium
6.3
CVE-2020-28026
Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters,...
Critical
9.8
Affected Vendor
exim
View all reports →Affected Software
exim
Vulnerable Versions:
4.00
Timeline
Official Publish:
May 6th, 2021
Last Modified:
August 4th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.