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CVE-2026-40687

MEDIUM

4.8

Descricao

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.

Detalhes CVE

Pontuacao CVSS v3.14.8

SeveridadeMEDIUM

Vetor CVSSCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

Vetor de ataqueNETWORK

ComplexidadeHIGH

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado4/30/2026

Ultima modificacao5/1/2026

Fontenvd

Avistamentos honeypot0

Produtos afetados

exim:exim

Fraquezas (CWE)

CWE-909

Referencias

https://code.exim.org/exim/exim/commit/68b963b9f75ca27b38e1c0f8c87037990199f505(cve@mitre.org)

https://exim.org/static/doc/security/CVE-2026-40687.txt(cve@mitre.org)

https://exim.org/static/doc/security/cve-2026-04.1/CVE2026-40687.assessment(cve@mitre.org)

https://www.openwall.com/lists/oss-security/2026/04/30/21(cve@mitre.org)

Correlacoes IOC

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