CVE-2017-18184: Qpdf Project Qpdf

Medium severity, CVSS 5.5. EPSS: 0.7% chance of exploitation in the next 30 days.

An issue was discovered in QPDF before 7.0.0. There is a stack-based out-of-bounds read in the function iterate_rc4 in QPDF_encryption.cc.

Affected products

• Qpdf Project Qpdf: before 7.0.0 (fixed in 7.0.0)

Published 2018-02-13. Last modified 2026-06-17.