HOMEVULNERABILITIESCVE-2001-1291
CRITICALPOC

CVE-2001-1291

CWE-307Published: July 12, 2001· Updated: Jun 16, 2026

9.8
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2001-1291 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

A proof-of-concept (PoC) exploit exists for CVE-2001-1291. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

3com2 product(s)
superstack ii ps hub 40 firmwaresuperstack ii ps hub 40
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://www.securityfocus.com/archive/1/196957
ADVISORYhttp://www.securityfocus.com/bid/3034
ADVISORYhttps://exchange.xforce.ibmcloud.com/vulnerabilities/6855
ADVISORYhttp://www.securityfocus.com/archive/1/196957
ADVISORYhttp://www.securityfocus.com/bid/3034
ADVISORYhttps://exchange.xforce.ibmcloud.com/vulnerabilities/6855

All References (6)

→
http://www.securityfocus.com/archive/1/196957Broken Link · Third Party Advisory · VDB Entry · Vendor Advisory
→
http://www.securityfocus.com/bid/3034Broken Link · Exploit · Third Party Advisory · VDB Entry · Vendor Advisory
→
https://exchange.xforce.ibmcloud.com/vulnerabilities/6855Third Party Advisory · VDB Entry
→
http://www.securityfocus.com/archive/1/196957Broken Link · Third Party Advisory · VDB Entry · Vendor Advisory
→
http://www.securityfocus.com/bid/3034Broken Link · Exploit · Third Party Advisory · VDB Entry · Vendor Advisory
→
https://exchange.xforce.ibmcloud.com/vulnerabilities/6855Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2001-1291
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-307
CISA KEVNo
ExploitPOC
Affected1 vendor(s)
PublishedJul 12, 2001

Related CVEs (CWE-307)

CVE-2017-7915
9.8
CVE-2017-7898
9.8
CVE-2016-9124
9.8
CVE-2025-8679
9.8
CVE-2017-1197
9.8
CVE-2017-11187
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2001-1291 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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