CVE-2026-66140
High
Description
Exim before 4.99.5 allows directory traversal to access files outside of the spool area, and consequently gain privileges, because arguments related to queue-name are mishandled.
SeverityHigh
CVSS8.4
Exploit probability—
Product
Exim
PublishedJul 24, 2026
First seenJul 24, 2026
Weakness typeCWE-24CWE-24
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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