Vulnerability Report

CVE-2024-56406

Title: Perl RCE

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2024-56406.

CWE Category CWE-787

Published Date Apr 13, 2025

Modified Date Oct 16, 2025

Exploit Status Not Found

Score 8.4 CVSS v3.1

Exploit Probability (EPSS)

0.54%

Vulnerability Summary

CVE-2024-56406: 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.

Impacted Vendors

perl 1

larry_wall 1

Reference Links

https://github.com/Perl/perl5/commit/87f42aa0e0096e9a346c9672aa3a0bd3bef8c1dd.patch https://metacpan.org/release/SHAY/perl-5.38.4/changes https://metacpan.org/release/SHAY/perl-5.40.2/changes http://www.openwall.com/lists/oss-security/2025/04/13/3 http://www.openwall.com/lists/oss-security/2025/04/13/4 http://www.openwall.com/lists/oss-security/2025/04/13/5

CVSS v3.1

Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0

Severity HIGH

8.4

Attack Vector

LOCAL

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2024-56406 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

October 16, 2025 MODIFIED

Vulnerability data or affected products updated.

October 16, 2025 MODIFIED

Vulnerability data updated via NVD.

April 13, 2025 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.