CVE-2025-48172

5.6 MEDIUM

Published: July 04, 2025 Modified: April 15, 2026

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://drive.google.com/file/d/1XpulFyCGlq7Szzg5RsH-eRwZ6OyuSozl/view?usp=sharing

Source: cve@mitre.org

https://drive.google.com/file/d/1wq51px42eoJz2VQ1Qu9ObPVQVom9T9H_/view?usp=sharing

Source: cve@mitre.org

https://github.com/jedwing/CHMLib/blob/2bef8d063ec7d88a8de6fd9f0513ea42ac0fa21f/src/chm_lib.c#L1386

Source: cve@mitre.org

https://github.com/sumatrapdfreader/sumatrapdf/commit/08179946a745cf1605e4b9670942ec1a6e1f4c5d

Source: cve@mitre.org

https://drive.google.com/file/d/1XpulFyCGlq7Szzg5RsH-eRwZ6OyuSozl/view?usp=sharing

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

5 reference(s) from NVD

Quick Stats

CVSS v3 Score

5.6 / 10.0

EPSS (Exploit Probability)

0.0%

7th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-190

Related CVEs