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.
Metrics
Affected Vendors & Products
References
History
Fri, 01 May 2026 15:15:00 +0000
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ssvc
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Fri, 01 May 2026 05:45:00 +0000
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| Title | Out‑of‑Bounds Write and Data Disclosure via Exim SPA Authentication Driver |
Fri, 01 May 2026 02:30:00 +0000
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| References |
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Fri, 01 May 2026 02:00:00 +0000
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Thu, 30 Apr 2026 21:45:00 +0000
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| 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. | |
| First Time appeared |
Exim
Exim exim |
|
| Weaknesses | CWE-909 | |
| CPEs | cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Exim
Exim exim |
|
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: mitre
Published: 2026-04-30T00:00:00.000Z
Updated: 2026-05-01T14:25:12.276Z
Reserved: 2026-04-14T00:00:00.000Z
Link: CVE-2026-40687
Updated: 2026-05-01T14:25:08.569Z
Status : Analyzed
Published: 2026-04-30T22:16:25.923
Modified: 2026-05-01T19:17:51.200
Link: CVE-2026-40687
No data.
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