ALPINE-CVE-2026-40684

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Source
https://security.alpinelinux.org/vuln/CVE-2026-40684
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40684.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-40684
Upstream
  • CVE-2026-40684
Published
2026-04-30T22:16:25Z
Modified
2026-11-03T06:32:55Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

In Exim before 4.99.2, on systems using musl libc (not glibc), an attacker can crash the connection instance when malformed DNS data is present in PTR records. This is caused by a dn_expand oddity in octal printing.

References

Affected packages

Alpine:v3.23 / exim

Package

Name
exim
Purl
pkg:apk/alpine/exim?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.98.2-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40684.json"

Alpine:v3.24 / exim

Package

Name
exim
Purl
pkg:apk/alpine/exim?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.98.2-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40684.json"