CVE-2026-23951
MEDIUM SEVERITYCVSS Score & Metrics
Base Score
5.5 / 10
Vector String
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Vulnerability Description
SumatraPDF is a multi-format reader for Windows. All versions contain an off-by-one error in the validation code that only triggers with exactly 2 records, causing an integer underflow in the size calculation. This bug exists in PalmDbReader::GetRecord when opening a crafted Mobi file, resulting in an out-of-bounds heap read that crashes the app. There are no published fixes at the time of publication.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-125
Source
NVD
Vendor
sumatrapdfreader
Product
sumatrapdf
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