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.
References (5)
Scores
CVSS v3
4.8
EPSS
0.0005
EPSS Percentile
16.0%
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-909
Status
published
Products (1)
Exim/Exim
< 4.99.2
Published
Apr 30, 2026
Tracked Since
May 01, 2026