CVE-2026-66141

Published Jul 24, 2026 CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed
Description
Exim before 4.99.5 allows .forward privilege escalation because force_command for a pipe transport is mishandled.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6400-1 exim4 security update
History
Type Values Removed Values Added
Title Privilege Escalation via .forward File in Exim before 4.99.5
Type Values Removed Values Added
Title Privilege Escalation via .forward File in Exim before 4.99.5
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Exim before 4.99.5 allows .forward privilege escalation because force_command for a pipe transport is mishandled.
First Time appeared Exim
Exim exim
Weaknesses CWE-829
CPEs cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*
Vendors & Products Exim
Exim exim
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Jul 24, 2026, 6:42 PM
Reserved
Jul 24, 2026, 4:37 AM
Status
Analyzed
Published
Jul 24, 2026, 5:16 AM
Modified
Aug 17, 2026, 7:06 PM