CVE-2025-48172

Published Jul 4, 2025

Last updated 10 days ago

Overview

Description
CHMLib through 2bef8d0, as used in SumatraPDF and other products, has a chm_lib.c _chm_decompress_block integer overflow. There is a resultant heap-based buffer overflow in _chm_fetch_bytes.
Source
cve@mitre.org
NVD status
Awaiting Analysis

Risk scores

CVSS 3.1

Type
Secondary
Base score
5.6
Impact score
3.7
Exploitability score
1.4
Vector string
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
Severity
MEDIUM

Weaknesses

cve@mitre.org
CWE-190

Social media

Hype score
Not currently trending