CVE-2026-66141
High
Description
Exim before 4.99.5 allows .forward privilege escalation because force_command for a pipe transport is mishandled.
SeverityHigh
CVSS7.4
Exploit probability—
Product
Exim
PublishedJul 24, 2026
First seenJul 24, 2026
Weakness typeCWE-829CWE-829
How to fix
Update
- exim exim4.99.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| exim exim | v < 4.99.5 | 4.99.5 |
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