7.5

CVE-2026-40684

Medienbericht
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Exim ≫ Exim Version < 4.99.2
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.36% 0.278
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
cve@mitre.org 5.9 2.2 3.6
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-684 Incorrect Provision of Specified Functionality

The code does not function according to its published specifications, potentially leading to incorrect usage.

Für Zugriff zu Vulnerability Intelligence ist ein VulnDex Zugang erforderlich.
VulnDex Intel
Media Report
04.05.2026 17:53
https://www.openwall.com/lists/oss-security/2026/04/30/21
Third Party Advisory
Mailing List
https://exim.org/static/doc/security/cve-2026-04.1/CVE2026-40684.assessment
Vendor Advisory
https://code.exim.org/exim/exim/commit/628bbaca7672748d941a12e7cd5f0122a4e18c81
Patch
https://exim.org/static/doc/security/CVE-2026-40684.txt
Broken Link
http://www.openwall.com/lists/oss-security/2026/05/01/11