CVE-2026-23951 SumatraPDF's Integer Underflow in PalmDbReader Leads to Crash

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 ...

STDU Viewer .epub File Buffer Overflow Vulnerability

STDU Viewer is a free file viewer that supports multiple formats. The program supports TIFF, PDF, DjVu, XPS and WWF formats. A buffer overflow vulnerability exists in STDU Viewer version 1.6.375. A local attacker can exploit this vulnerability to cause a denial of service with the help of a...