CVE-2016-9424: An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31.

Security readout for executives and security teams

CVE-2016-9424 affects the Tatsuya Kinoshita w3m text browser fork before 0.5.3-31. A crafted HTML page can crash w3m through a heap buffer overflow, with possible arbitrary code execution noted in the CVE description. Business risk depends on whether w3m processes untrusted HTML in user sessions or automation. Exposure is most likely on Linux or Unix systems with w3m installed, especially where users or scripts open external or attacker-controlled HTML. The supplied affected-product metadata is incomplete, so package inventory is required. Treat as a targeted remediation item rather than an emergency unless w3m handles untrusted web or email content in production workflows. Prioritize internet-facing automation, shared servers, and developer environments where external HTML is routinely opened. Mitigation focus: Upgrade w3m to a vendor-supported fixed build, at or beyond 0.5.3-31 where applicable.; Apply distribution security updates, including any guidance from Gentoo or your OS vendor.; Avoid using vulnerable w3m builds to render untrusted HTML..

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.