CVE-2025-13397: mruby/c through 3.4 (inclusive); +1 more affected products

CVE-2025-13397. CVSS 3.1 base score 5.5 (MEDIUM, NVD). EPSS 0.00143 (percentile 0.03267), scored 17-Oct-2026.

Affected technology

mruby/c · through 3.4 (inclusive)
s-itoc

mrubyc · 3.0, 3.1, 3.2, 3.3, 3.4
Vendor not specified by the source

Description’s affected range: up to 3.4

Component: Not specified by the source
Function: mrbc_raw_realloc
File: src/alloc.c

Attack conditions (VulDB, CVSS 4.0): Local · Low privileges required · No user interaction required

What an attacker can do

VulDB’s CVSS 4.0 assessment (base score 4.8/10) rates confidentiality and integrity impact as none; availability impact as low. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 19-Oct-2026 14:02 UTC

CWE: CWE-404, CWE-476
CCR priority: 22.0 /100 (P4)
CVSS 3.1: 5.5 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · NVD
EPSS: 0.00143 · percentile 0.03267 · 2026-10-17
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-19 14:02:10.907757+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-13397.html