A heap buffer overflow vulnerability was discovered in Perl.

Release branches 5.34, 5.36, 5.38 and 5.40 are affected, including development versions from 5.33.1 through 5.41.10.

When there are non-ASCII bytes in the left-hand-side of the `tr` operator, `S_do_trans_invmap` can overflow the destination pointer `d`.

   $ perl -e '$_ = "\x{FF}" x 1000000, tr/\xFF/\x{100}/,'
   Segmentation fault (core dumped)

It is believed that this vulnerability can enable Denial of Service and possibly Code Execution attacks on platforms that lack sufficient defenses.

Published: 2025-04-13

CVSS: 8.4

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Download Exploit for CVE-2024-56406 here:

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Check our team here:

https://tatramed.sk/exploit-293-cve-2025-59681/

https://tatramed.sk/exploit-36-cve-2025-13601/

https://tatramed.sk/exploit-179-cve-2016-4655/

https://tatramed.sk/exploit-1187-cve-2024-20674/

https://tatramed.sk/exploit-933-cve-2022-34169/