CVE-2004-0473: Argument injection vulnerability in Opera before 7.50 does not properly filter "-" characters that begin a...

Security readout for executives and security teams

A crafted telnet link could make Opera before 7.50 pass attacker-controlled options to the system telnet command. On Windows XP or Linux, this could create, truncate, or overwrite files under the user's privileges. The issue is mainly a legacy-browser exposure concern today. Exposure is most likely limited to systems still running Opera before 7.50 with telnet URI handling reachable from web or email content. Modern environments are unlikely to be affected unless legacy desktop images, old kiosks, or archival systems retain this browser. Treat as a legacy hygiene issue unless old Opera installations are still present. If discovered on operational systems, remediate promptly because crafted links could damage user-writable files, but the business urgency is lower than internet-facing server flaws. Mitigation focus: Upgrade Opera to version 7.50 or later where applicable.; Remove unsupported legacy Opera installations from managed endpoints.; Disable or restrict telnet URI handling where legacy systems must remain..

Prepared

Jun 30, 2026, 05:56 UTC (UTC+00:00)

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