CVE Alert: CVE-2025-48172
Vulnerability Summary: CVE-2025-48172
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.
Affected Endpoints:
No affected endpoints listed.
Published Date:
7/4/2025, 1:15:25 PM
⚠️ CVSS Score:
Exploit Status:
Not ExploitedReferences:
- https://drive.google.com/file/d/1XpulFyCGlq7Szzg5RsH-eRwZ6OyuSozl/view?usp=sharing
- https://drive.google.com/file/d/1wq51px42eoJz2VQ1Qu9ObPVQVom9T9H_/view?usp=sharing
- https://github.com/jedwing/CHMLib/blob/2bef8d063ec7d88a8de6fd9f0513ea42ac0fa21f/src/chm_lib.c#L1386
- https://github.com/sumatrapdfreader/sumatrapdf/commit/08179946a745cf1605e4b9670942ec1a6e1f4c5d
Recommended Action:
No proposed action available. Please refer to vendor documentation for updates.
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