CyberRota Analysis
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CVE
CVE-2026-40687
Severity
MEDIUM
CVSS
4.8
EPSS
0.17%
Original NVD Description
In Exim before 4.99.2, when the SPA authentication driver is used with an adversarial SPA resource, there can be an out-of-bounds write that crashes the connection instance, or erroneous data processing that divulges data from uninitialized heap memory.