How severe is CVE-2001-1291?

CVE-2001-1291 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2001-1291 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-1291?

CVE-2001-1291 affects 3com Superstack Ii Ps Hub 40 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2001-1291?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2001-1291 published?

CVE-2001-1291 was published on 2001-07-12 and last updated on 2026-06-16.

CVE-2001-1291

CVE-2001-1291 is a critical-severity vulnerability in 3com Superstack Ii Ps Hub 40 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-307.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 9% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-307
Affected product: 3com Superstack Ii Ps Hub 40 Firmware
Published: 2001-07-12
Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2001-1291?: 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.
How severe is CVE-2001-1291?: CVE-2001-1291 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2001-1291 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-1291?: CVE-2001-1291 affects 3com Superstack Ii Ps Hub 40 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2001-1291?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2001-1291 published?: CVE-2001-1291 was published on 2001-07-12 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:3com:superstack_ii_ps_hub_40_firmware:-:*:*:*:*:*:*:*

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