How severe is CVE-2014-2155?

CVE-2014-2155 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2014-2155 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-2155?

CVE-2014-2155 affects Cisco Cns Network Registrar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2014-2155?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2014-2155 published?

CVE-2014-2155 was published on 2014-04-19 and last updated on 2026-06-17.

CVE-2014-2155

CVE-2014-2155 is a medium-severity vulnerability in Cisco Cns Network Registrar with a CVSS 2.0 base score of 5.0. 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Cns Network Registrar
Published: 2014-04-19
Last modified: 2026-06-17

Description

The DHCPv6 server module in Cisco CNS Network Registrar 7.1 allows remote attackers to cause a denial of service (daemon reload) via a malformed DHCPv6 packet, aka Bug ID CSCuo07437.

Frequently asked questions

What is CVE-2014-2155?: The DHCPv6 server module in Cisco CNS Network Registrar 7.1 allows remote attackers to cause a denial of service (daemon reload) via a malformed DHCPv6 packet, aka Bug ID CSCuo07437.
How severe is CVE-2014-2155?: CVE-2014-2155 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2014-2155 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-2155?: CVE-2014-2155 affects Cisco Cns Network Registrar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2014-2155?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-2155 published?: CVE-2014-2155 was published on 2014-04-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cisco:cns_network_registrar:7.1:*:*:*:*:*:*:*

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