CVE-2016-9423: Tats w3m

High severity, CVSS 8.8. EPSS: 3.2% chance of exploitation in the next 30 days.

An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. Heap-based buffer overflow in w3m allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted HTML page.

Affected products

• Tats w3m: up to and including 0.5.3-30

Published 2016-12-12. Last modified 2026-06-17.