CVE-2001-1291: 3com Superstack Ii Ps Hub 40 Firmware

Critical severity, CVSS 9.8. EPSS: 8.9% chance of exploitation in the next 30 days.

The telnet server for 3Com hardware such as PS40 SuperStack II does not delay or disconnect remote attackers who provide an incorrect username or password, which makes it easier to break into the server via brute force password guessing.

Affected products

• 3com Superstack Ii Ps Hub 40 Firmware: affected versions not specified

Published 2001-07-12. Last modified 2026-06-16.