CVE-2026-66141

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CVSS 3.1

7.8 high

EPSS

<1%p1

Published

Jul 24, 2026 (Jul 24, 2026)

Modified

Aug 17, 2026

Description

Exim before 4.99.5 allows .forward privilege escalation because force_command for a pipe transport is mishandled.

Vendors: exim
Products: exim
Weakness: CWE-829
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.1%)

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