Exim CVE-2026-40684

mhsolutions · 2026-05-04T03:44:26-0600

I see exim have CVE 7.5

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.

NVD - CVE-2026-40684

nvd.nist.gov

Does this affect Exim 4.99.1 on DirectAdmin?

Exim CVE-2026-40684

mhsolutions

Verified User

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.​

NVD - CVE-2026-40684

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.