CVE-2001-1291
The telnet server for 3Com hardware such as PS40 SuperStack II does not delay or disconnect...
CVE-2001-1291 is a critical vulnerability (CVSS 9.8) in 3com Superstack Ii Ps Hub 40 Firmware, published July 12, 2001. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 8.90%, the 95th percentile. No source names a fixed version.
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2001-1291- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-307
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2001-1291- Updated
- 2026-11-02
EUVDEUVD-2001-1272 No score
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.
- Record
EUVD-2001-1272- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9qq6-6qwx-6wrm
The telnet server for 3Com hardware such as PS40 SuperStack II does not delay or disconnect...
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.
- Record
GHSA-9qq6-6qwx-6wrm- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-307
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | 3Com SuperStack II PS Hub 40 - TelnetD Weak Password Protection | 2001-07-12 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, Exploit-DB, GitHub Advisories, NVD |