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CVE-2025-67896
Published: Dec 14, 2025
Modified: Dec 18, 2025
PUBLISHED
CVSS v3.1
7.0
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.
| Vendor | Product | Versions |
|---|---|---|
Exim | Exim | affected 4.99 - < 4.99.1 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
Low
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