CVE-2018-7173: Xpdfreader Xpdf

Medium severity, CVSS 5.5. EPSS: 0.8% chance of exploitation in the next 30 days.

A large loop in JBIG2Stream::readSymbolDictSeg in xpdf 4.00 allows an attacker to cause denial of service via a specific file due to inappropriate decoding.

Affected products

• Xpdfreader Xpdf: version 4.00 only

Published 2018-02-15. Last modified 2026-06-17.