Unrated severityNVD Advisory· Published Jun 18, 2001· Updated Jun 16, 2026

CVE-2001-0427

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Cisco Systems, Inc./VPN 3060 Concentrator2 versions
cpe:2.3:h:cisco:vpn_3000_concentrator:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:h:cisco:vpn_3000_concentrator:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco:vpn_3060_concentrator:*:*:*:*:*:*:*:*
Cisco Systems, Inc./VPN 3080 Concentrator3 versions
cpe:2.3:h:cisco:vpn_3005_concentrator:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:h:cisco:vpn_3005_concentrator:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco:vpn_3015_concentrator:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco:vpn_3080_concentrator:*:*:*:*:*:*:*:*
Cisco Systems, Inc./VPN 3030 Concentator
cpe:2.3:h:cisco:vpn_3030_concentator:*:*:*:*:*:*:*:*
Cisco Systems, Inc./VPN 3000 Concentrator Series Softwarellm-fuzzy
Range: <2.5.2(F)

Patches

Vulnerability mechanics

References

www.cisco.com/warp/public/707/vpn3k-telnet-vuln-pub.shtmlnvdPatchVendor Advisory
www.osvdb.org/5643nvd
exchange.xforce.ibmcloud.com/vulnerabilities/6298nvd

News mentions

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