CVE-2026-40687: In Exim before 4.99.2, when the SPA authentication driver is used with an adversarial SPA resource, there can be an...
MEDIUM
CVSS 4.8
Exploit Available
Published: April 30, 2026 | Last Modified: May 1, 2026
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.
Ghostwire Analysis — What This Means Practically
- Medium CVSS score indicates moderate risk — exploitation requires specific conditions or results in limited impact.
- Exploit code is reported to be available, increasing the likelihood of active exploitation.
This analysis is generated by Ghostwire from NVD, CISA KEV, EPSS, and open-source intelligence data. Verify findings through primary sources before acting.
Security Coverage (2 articles)
References