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Vulnerability record · CVE-2001-0375 · published 18 June 2001

CVE-2001-0375: Cisco pix firewall 515 vulnerability

Cisco · Pix Firewall 515

Cisco PIX Firewall 515 and 520 with 5.1.4 OS running aaa authentication to a TACACS+ server allows remote attackers to cause a denial of service via a large number of authentication requests.

5.0 CVSS 2.0 Medium EPSS 10% · top 4.4%
5.0CVSS 2.0 base score
10%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
8References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

Cisco PIX Firewall 515 and 520 with 5.1.4 OS running aaa authentication to a TACACS+ server allows remote attackers to cause a denial of service via a large number of authentication requests.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://marc.info/?l=bugtraq&m=98658271707833&w=2
http://www.cisco.com/warp/public/707/pixfirewall-authen-flood-pub.shtml
http://www.securityfocus.com/bid/2551 ExploitPatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/6353
http://marc.info/?l=bugtraq&m=98658271707833&w=2
http://www.cisco.com/warp/public/707/pixfirewall-authen-flood-pub.shtml
http://www.securityfocus.com/bid/2551 ExploitPatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/6353

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.8CVE-2011-0395Cisco adaptive security appliance vulnerabilityCisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.0 before 8.0(5.20), 8.1 before 8.1(2.48), 8.2 before 8.2(3), and 8.3 bef…EPSS 2.6%7.8CVE-2011-0396Cisco adaptive security appliance permissions and access controls vulnerabilityCisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.0 before 8.0(5.23), 8.1 before 8.1(2.49), 8.2 before 8.2(4.1), and 8.3 b…EPSS 1.4%7.8CVE-2010-2814Cisco adaptive security appliance vulnerabilityUnspecified vulnerability in the Transport Layer Security (TLS) implementation on Cisco Adaptive Security Appliances (ASA) 5500 series devices with s…EPSS 2.5%7.8CVE-2010-2815Cisco adaptive security appliance vulnerabilityUnspecified vulnerability in the Transport Layer Security (TLS) implementation on Cisco Adaptive Security Appliances (ASA) 5500 series devices with s…EPSS 2.5%7.8CVE-2010-2816Cisco adaptive security appliance vulnerabilityUnspecified vulnerability in the SIP inspection feature on Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.0 before 8.0(…EPSS 2.5%7.8CVE-2010-2817Cisco adaptive security appliance vulnerabilityUnspecified vulnerability in the IKE implementation on Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 7.0 before 7.0(8.11…EPSS 2.5%7.5CVE-2005-4499Cisco vpn 3001 concentrator vulnerabilityThe Downloadable RADIUS ACLs feature in Cisco PIX and VPN 3000 concentrators, when creating an ACL on the Cisco Secure Access Control Server (CS ACS)…EPSS 2.6%6.8CVE-2006-4312Cisco pix firewall 501 vulnerabilityCisco PIX 500 Series Security Appliances and ASA 5500 Series Adaptive Security Appliances, when running 7.0(x) up to 7.0(5) and 7.1(x) up to 7.1(2.4)…EPSS 0.32%

Source: NIST National Vulnerability Database (record CVE-2001-0375), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.