CVE-2011-2024

CVE-2011-2024 is a critical-severity vulnerability in Cisco Cns Network Registrar with a CVSS 2.0 base score of 10.0. 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-255.

Key facts

• Severity: Critical (CVSS 2.0 base score 10.0)
• EPSS exploit prediction: 3% (87th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-255
• Affected product: Cisco Cns Network Registrar
• Published: 2011-06-02
• Last modified: 2026-06-16

Description

Cisco Network Registrar before 7.2 has a default administrative password, which makes it easier for remote attackers to obtain access via a TCP session, aka Bug ID CSCsm50627.

Frequently asked questions

What is CVE-2011-2024?

Cisco Network Registrar before 7.2 has a default administrative password, which makes it easier for remote attackers to obtain access via a TCP session, aka Bug ID CSCsm50627.

How severe is CVE-2011-2024?

CVE-2011-2024 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2011-2024 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-2024?

CVE-2011-2024 primarily affects Cisco Cns Network Registrar. In total, 32 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-2024?

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-2011-2024 published?

CVE-2011-2024 was published on 2011-06-02 and last updated on 2026-06-16.

References

• http://osvdb.org/72720
• http://www.cisco.com/en/US/products/products_security_advisory09186a0080b80121.shtml
• http://www.securityfocus.com/bid/48076
• http://www.securitytracker.com/id?1025589
• https://exchange.xforce.ibmcloud.com/vulnerabilities/67782

Affected products (32)

• cpe:2.3:a:cisco:cns_network_registrar:*:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.0:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.0.5.2:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.0.5.3:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.0.5.4:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.1.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.1.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.1.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.1.1.4:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.1.4:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.1.4.1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.1.4.2:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.1.6:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.2:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.2.3:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.2.4:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.3:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:6.3.3:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:7.0:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:7.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:7.1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:7.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco:cns_network_registrar:7.1.2.1:*:*:*:*:*:*:*

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