CVE-2025-67896
High
Description
Exim before 4.99.1, with certain non-default rate-limit configurations, allows a remote heap-based buffer overflow because database records are cast directly to internal structures without validation.
SeverityHigh
CVSS7.0
Exploit probability—
Product
Exim
PublishedDec 14, 2025
First seenDec 14, 2025
Weakness typeCWE-122CWE-122
How to fix
Update
- exim exim4.99.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| exim exim | v < 4.99.1 | 4.99.1 |
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