4.0Media
Exim Exim
Exim before 4.100.1 allows SMTP smuggling in which the received message does not match any sent message, and instead depends on crafted data sent after a rejection during DATA processing.
5.9Media
CVE-2026-40684
Descripción
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.
Debilidad (CWE):
CWE-684
Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.
Productos y versiones afectados
Referencias y parches
- https://www.openwall.com/lists/oss-security/2026/04/30/21 Mailing ListThird Party Advisory
- 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
Coincidencias CPE (NVD) (1)
cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*< 4.99.2