CVE-2025-67896
BaseFortify
Publication date: 2025-12-14
Last updated on: 2025-12-22
Assigner: MITRE
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| exim | exim | to 4.99.1 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-122 | A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). |
Attack-Flow Graph
AI Powered Q&A
What immediate steps should I take to mitigate this vulnerability?
The immediate step to mitigate this vulnerability is to update Exim to version 4.99.1 or later, which includes the fix for the remote heap corruption issue. The fixed version will be officially released on December 18, 2025, and can be obtained from the official Exim code repository at https://code.exim.org/exim/exim. [1]
Can you explain this vulnerability to me?
This vulnerability in Exim versions before 4.99.1 allows remote attackers to cause heap corruption. Further technical details will be provided after 2025-12-18.
How can this vulnerability impact me? :
The vulnerability can lead to remote heap corruption, which may allow attackers to compromise the integrity and availability of the affected system, potentially leading to unauthorized information modification or denial of service.