CVE-2026-48840

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CVSS 3.1

5.3 medium

EPSS

<1%p18

Published

May 30, 2026 (May 30, 2026)

Modified

Jul 22, 2026

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.

Vendors: exim
Products: exim
Weakness: CWE-839
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (0.3%)

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