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vulnerability
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CVE-2025-67896
Component Overview
Vulnerability Overview
Name
CVE-2025-67896
Source
NVD (
link
)
Debian (
link
)
Description
Exim before 4.99.1, with certain non-default rate-limit configurations, allows a remote heap-based buffer overflow because database records are cast directly to internal structures without validation.
CWEs
CWE-122
Published Date
Dec 14, 2025
Updated Date
Jun 17, 2026
Workaround
-
Advisories
https://exim.org/static/doc/security/
Vendor Advisory
https://exim.org/static/doc/security/EXIM-Security-2025-12-09.1/report.txt
Vendor Advisory
https://www.openwall.com/lists/oss-security/2025/12/11/2
Mailing List
http://www.openwall.com/lists/oss-security/2025/12/14/1
Mailing List
http://www.openwall.com/lists/oss-security/2025/12/18/3
Mailing List
Analysis
#
Affected Component
Analysis
exim
Exploitable
Vulnerability Ratings
#
7
CVSSv31
9.8
CVSSv31
NaN
other
Others affected components
#
Name
Project
Project Version
Version
Status
exim
buildroot
2025.02.x
4.99.4
Not Affected
exim
buildroot
master
4.99.4
Not Affected
exim
openwrt
master
4.99.4-r1
Not Affected