CVE-2025-48172 (GCVE-0-2025-48172)

Vulnerability from cvelistv5 – Published: 2025-07-04 00:00 – Updated: 2025-07-08 14:29
VLAI?
Summary
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.
Severity ?
5.6 (Medium)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version
CHMLib CHMLib Affected: 0 , ≤ 2bef8d063ec7d88a8de6fd9f0513ea42ac0fa21f (git)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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