CVE-2026-48840

medium

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.

References

https://www.openwall.com/lists/oss-security/2026/05/29/3

https://exim.org/static/doc/security/EXIM-Security-2026-05-19.1

http://www.openwall.com/lists/oss-security/2026/05/29/3

Details

Source: Mitre, NVD

Published: 2026-05-30

Updated: 2026-05-30

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 5.3

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