CVE-2002-1547: Netscreen running ScreenOS 4.0.0r6 and earlier allows remote attackers to cause a denial of service via a m...

Security readout for executives and security teams

This is an old denial-of-service issue in Netscreen ScreenOS 4.0.0r6 and earlier. A remote attacker could send a malformed SSH packet to the Secure Command Shell management interface and disrupt availability. Business urgency depends almost entirely on whether any legacy Netscreen devices remain in service and whether management access is reachable. Exposure is most likely in legacy environments still running Netscreen ScreenOS 4.0.0r6 or earlier with SCS or SSH management reachable from untrusted networks. Modern environments are unlikely to be affected unless old appliances remain deployed or forgotten. Treat this as a targeted legacy infrastructure risk. It is not a broad modern emergency from the provided evidence, but exposed obsolete firewall management interfaces can create avoidable outage risk and should be removed, isolated, or formally accepted. Mitigation focus: Inventory any Netscreen or ScreenOS devices still in production or connected networks.; Check archived vendor guidance for the named Netscreen advisory before selecting a software fix.; Restrict SCS or SSH management access to trusted administration networks only..

Prepared

Jun 30, 2026, 03:39 UTC (UTC+00:00)

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