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CVE-2026-48840
Component Overview
Vulnerability Overview
Name
CVE-2026-48840
Source
NVD (
link
)
Debian (
link
)
Description
Exim 4.88 before 4.99.4, in some proxy configurations, mishandles certain short payloads, leading to disclosure of uninitialized stack memory values to a client.
CWEs
CWE-839
Published Date
May 30, 2026
Updated Date
Jun 17, 2026
Workaround
-
Advisories
https://exim.org/static/doc/security/EXIM-Security-2026-05-19.1
Vendor Advisory
https://www.openwall.com/lists/oss-security/2026/05/29/3
Mailing List
http://www.openwall.com/lists/oss-security/2026/05/29/3
Mailing List
Analysis
#
Affected Component
Analysis
exim
Exploitable
Vulnerability Ratings
#
5.3
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