VULNERABILITY INTELLIGENCE

CVE-2026-48840

CVSS score5.3 MEDIUM

EPSS probability0.26%

CISA KEVNot currently listed

Published2026-05-30

Last modified2026-07-22

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

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.

Weakness classification

CWE-839: Numeric Range Comparison Without Minimum Check

Primary references

cve@mitre.org — Vendor Advisory
cve@mitre.org — Mailing List, Mitigation, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Mitigation, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108