Cyber Resilience

CVE-2023-47038

High

Published: 18 December 2023

Published
18 December 2023
Modified
04 November 2025
KEV Added
Patch
CVSS Score v3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0011 28.5th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-47038 is a high-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Redhat Enterprise Linux. Its CVSS base score is 7.0 (High).

Operationally, ranked at the 28.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

A vulnerability was found in perl 5.30.0 through 5.38.0. This issue occurs when a crafted regular expression is compiled by perl, which can allow an attacker controlled byte buffer overflow in a heap allocated buffer.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

perl
perl
5.30.0 — 5.38.0
fedoraproject
fedora
39
redhat
enterprise linux
8.0, 9.0
redhat
enterprise linux aus
9.4
redhat
enterprise linux eus
9.4

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

References