NVD Vulnerability Detail
Search Exploit, PoC
CVE-2026-40687
Summary

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.

Publication Date May 1, 2026, 7:16 a.m.
Registration Date May 2, 2026, 4:06 a.m.
Last Update May 2, 2026, 12:33 a.m.
CVSS3.1 : MEDIUM
スコア 4.8
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC)
攻撃に必要な特権レベル(PR) 不要
利用者の関与(UI) 不要
影響の想定範囲(S) 変更なし
機密性への影響(C)
完全性への影響(I) なし
可用性への影響(A)
Related information, measures and tools
Common Vulnerabilities List