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…
Published: 2026-04-30 · CVSS: 5.9 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7