CVE-2021-23165: Htmldoc Project Htmldoc

Critical severity, CVSS 9.8. EPSS: 3.5% chance of exploitation in the next 30 days.

A flaw was found in htmldoc before v1.9.12. Heap buffer overflow in pspdf_prepare_outpages(), in ps-pdf.cxx may lead to execute arbitrary code and denial of service.

Affected products

• Htmldoc Project Htmldoc: before 1.9.12 (fixed in 1.9.12)

Published 2022-03-16. Last modified 2026-06-17.