cvedb.io
CVE-2026-40686
LOW · CVSS 3.7
EPSS exploitation probability: 0%
Published 2026-04-30T22:16:25.787 · Last modified 2026-06-17T10:45:34.447

Summary

In Exim before 4.99.2, when utf8 operators are enabled, there is an out-of-bounds read if large UTF-8 trailing characters are present (malformed UTF-8 header data). Information might be divulged within an error message produced during handling of an unrelated e-mail message.

Affected products

exim — exim

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.