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I. Basic Information for CVE-2026-40687
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
资源初始化缺失
Source: NVD (National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
EximExim 0 ~ 4.99.2 -
II. Public POCs for CVE-2026-40687
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III. Intelligence Information for CVE-2026-40687
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IV. Related Vulnerabilities
Same product: Exim
Same vendor: Exim
Same weakness: CWE-909
V. Comments for CVE-2026-40687

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