CVE-2016-9630: An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-33.

Security readout for executives and security teams

CVE-2016-9630 is a remote denial-of-service issue in the Tatsuya Kinoshita fork of w3m before 0.5.3-33. A crafted HTML page can trigger a global buffer overflow and crash the browser. The source bundle does not show code execution, data theft, or active exploitation. Exposure is likely limited to environments running the Tatsuya Kinoshita w3m fork before 0.5.3-33 and using it to render remote or untrusted HTML. Servers are mainly affected if automated jobs, scripts, or users process attacker-controlled HTML through w3m. Prioritize remediation where w3m processes untrusted web content in automated workflows or shared systems. This is mainly an availability risk, not a confirmed breach-enabling issue based on the supplied evidence. Mitigation focus: Inventory systems and scripts using w3m.; Upgrade w3m to 0.5.3-33 or a vendor package containing the fix.; Avoid rendering untrusted HTML with vulnerable w3m versions..

Prepared

Jun 13, 2026, 13:16 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.