CVE-2001-1291

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2022-04-30. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 9%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
94.6%
KEV
Not listed

Published

July 12, 2001

Last Modified

June 16, 2026

Advisory Details (3)

Auto-updated Jun 21, 2026
No patch confirmed yet.
generic

IBM X-Force Exchange

https://exchange.xforce.ibmcloud.com/vulnerabilities/6855
generic
http://www.securityfocus.com/bid/3034
generic
http://www.securityfocus.com/archive/1/196957

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 3× in last 7d / 17× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-15 16:53 UTCEPSS rescore
  2. 2026-07-15 01:55 UTCEPSS rescore
  3. 2026-07-11 08:22 UTCEPSS rescore
  4. 2026-07-08 15:08 UTCEPSS rescore
  5. 2026-07-04 06:26 UTCEPSS rescore
  6. 2026-07-02 14:00 UTCEPSS rescore
  7. 2026-06-29 14:02 UTCEPSS rescore
  8. 2026-06-28 14:02 UTCEPSS rescore
  9. 2026-06-27 03:04 UTCEPSS rescore
  10. 2026-06-24 14:01 UTCEPSS rescore
  11. 2026-06-23 21:29 UTCEPSS rescore
  12. 2026-06-21 01:56 UTCEPSS rescore
  13. 2026-06-19 19:22 UTCEPSS rescore
  14. 2026-06-18 17:49 UTCEPSS rescore
  15. 2026-06-18 17:49 UTCEPSS rescore
  16. 2026-06-17 17:49 UTCEPSS rescore
  17. 2026-06-16 17:49 UTCEPSS rescore
  18. 2026-06-14 23:13 UTCEPSS rescore
  19. 2026-06-13 22:56 UTCEPSS rescore
  20. 2026-06-12 23:07 UTCEPSS rescore
  21. 2026-06-11 13:55 UTCEPSS rescore
  22. 2026-06-10 22:13 UTCEPSS rescore
  23. 2026-06-10 13:17 UTCEPSS rescore
  24. 2026-06-08 14:13 UTCEPSS rescore
  25. 2026-06-07 15:21 UTCEPSS rescore
Show 44 more
  1. 2026-06-06 13:44 UTCEPSS rescore
  2. 2026-06-05 06:07 UTCEPSS rescore
  3. 2026-06-04 13:09 UTCEPSS rescore
  4. 2026-06-02 20:10 UTCEPSS rescore
  5. 2026-06-01 13:48 UTCEPSS rescore
  6. 2026-05-31 22:27 UTCEPSS rescore
  7. 2026-05-31 00:13 UTCEPSS rescore
  8. 2026-05-31 00:13 UTCEPSS rescore
  9. 2026-05-29 13:40 UTCEPSS rescore
  10. 2026-05-28 13:42 UTCEPSS rescore
  11. 2026-05-28 13:42 UTCEPSS rescore
  12. 2026-05-28 13:42 UTCEPSS rescore
  13. 2026-05-28 13:42 UTCEPSS rescore
  14. 2026-05-27 13:37 UTCEPSS rescore
  15. 2026-05-27 13:37 UTCEPSS rescore
  16. 2026-05-26 13:41 UTCEPSS rescore
  17. 2026-05-26 13:41 UTCEPSS rescore
  18. 2026-05-26 13:41 UTCEPSS rescore
  19. 2026-05-26 07:16 UTCEPSS rescore
  20. 2026-05-26 07:16 UTCEPSS rescore
  21. 2026-05-24 16:42 UTCEPSS rescore
  22. 2026-05-22 21:15 UTCEPSS rescore
  23. 2026-05-21 22:38 UTCEPSS rescore
  24. 2026-05-20 22:36 UTCEPSS rescore
  25. 2026-05-20 11:20 UTCEPSS rescore
  26. 2026-05-20 11:20 UTCEPSS rescore
  27. 2026-05-20 07:38 UTCEG score recompute
  28. 2026-05-20 07:38 UTCGHSA enrichment
  29. 2026-05-20 03:34 UTCEG score recompute
  30. 2026-05-20 03:34 UTCGHSA enrichment
  31. 2026-05-19 23:07 UTCEG score recompute
  32. 2026-05-19 23:07 UTCGHSA enrichment
  33. 2026-05-19 19:01 UTCEG score recompute
  34. 2026-05-19 19:01 UTCGHSA enrichment
  35. 2026-05-19 14:57 UTCEG score recompute
  36. 2026-05-19 14:57 UTCGHSA enrichment
  37. 2026-05-19 10:34 UTCEG score recompute
  38. 2026-05-19 10:34 UTCGHSA enrichment
  39. 2026-05-19 06:01 UTCEG score recompute
  40. 2026-05-19 06:01 UTCGHSA enrichment
  41. 2026-05-19 02:02 UTCEG score recompute
  42. 2026-05-19 02:02 UTCGHSA enrichment
  43. 2026-05-18 21:29 UTCEPSS rescore
  44. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-21011✓ verified
    First seen Jul 12, 2001

    3Com SuperStack II PS Hub 40 - TelnetD Weak Password Protection

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2001-1291?
CVE-2001-1291 is a critical vulnerability published on July 12, 2001. 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.
When was CVE-2001-1291 disclosed?
CVE-2001-1291 was first published in the National Vulnerability Database on July 12, 2001, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2001-1291 actively exploited?
CVE-2001-1291 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2001-1291?
CVE-2001-1291 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2001-1291?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2001-1291, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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