Description

SumatraPDF is a multi-format reader for Windows. In 3.5.2 and earlier, a heap out-of-bounds read vulnerability exists in SumatraPDF's MOBI HuffDic decompressor. The bounds check in AddCdicData() only validates half the range that DecodeOne() actually accesses. Opening a crafted .mobi file can read nearly (1 << codeLength) bytes beyond the CDIC dictionary buffer, leading to a crash.

INFO

Published Date :

2026-02-09T21:32:26.520Z

Last Modified :

2026-02-11T19:58:04.411Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-25920 vulnerability.

Vendors Products
Sumatrapdfreader
  • Sumatrapdf
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-25920.

URL Resource
https://github.com/sumatrapdfreader/sumatrapdf/blob/916392f94bc34e24f3c3286893ac6d7fa1e1c428/src/MobiDoc.cpp cve-icon cve-icon
https://github.com/sumatrapdfreader/sumatrapdf/commit/12b6887e9dfff874fe8749bab1bdc53d4ff075b3 cve-icon cve-icon
https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-5mwx-65x7-cffp cve-icon cve-icon
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