Heap-based Buffer Overflow Affecting exim/exim package, versions [,4.99.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published14 Dec 2025
- disclosed14 Dec 2025
- creditUnknown
Introduced: 14 Dec 2025
CVE-2025-67896 (opens in a new tab)How to fix?
Upgrade exim/exim to version 4.99.1 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow due to improper handling of memory allocation. An attacker can cause memory corruption and potentially disrupt service by sending specially crafted input to the affected service.
Note: Additional information about the vulnerability and the fix was not disclosed to the public at the time of writing this advisory.