CVE-2001-0427

Name: CVE-2001-0427
Creator: NVD / NIST
Published: 2001-06-18T04:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.52%

Last modified Jun 16, 2026

CVE-2001-0427 is a vulnerability of currently unknown severity. Cisco VPN 3000 series concentrators before 2.5.2(F) allow remote attackers to cause a denial of service via a flood of invalid login requests to (1) the SSL service, or (2) the telnet service, which do not properly disconnect the user after several failed login attempts.. EPSS estimates a 2.52% chance of exploitation in the next 30 days.

Description

Cisco VPN 3000 series concentrators before 2.5.2(F) allow remote attackers to cause a denial of service via a flood of invalid login requests to (1) the SSL service, or (2) the telnet service, which do not properly disconnect the user after several failed login attempts.

Metrics

EPSS Probability

2.52%

82.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Cisco	Vpn 3000 Concentrator	All versions
Cisco	Vpn 3005 Concentrator	All versions
Cisco	Vpn 3015 Concentrator	All versions
Cisco	Vpn 3030 Concentator	All versions
Cisco	Vpn 3060 Concentrator	All versions
Cisco	Vpn 3080 Concentrator	All versions

References

Timeline

Published: Jun 18, 2001
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2001-0427?

How severe is CVE-2001-0427?

Severity scoring for CVE-2001-0427 is pending analysis. The EPSS model estimates a 2.52% probability of exploitation in the next 30 days.

How do I fix CVE-2001-0427?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2001-0427?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST