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CVE

CVE-2026-40687

CVE-2026-40687 exim4
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CVE

CVE-2026-40687

CVE-2026-40687 exim4

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
4.8
-
3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
C
H
U
-
C
H
U
-

Related Resources

No items found.

References

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-40687

Severity

9.1

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
9.1
EPSS Probability
0.00052%
EPSS Percentile
0.16048%
Introduced Version
0
Fix Available

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