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TI-2020-02830 Aliases CVE-2020-3272GHSA-rprx-wwgg-c958

Cisco Prime Network Registrar DHCP Denial of Service Vulnerability

Priority MEDIUM 42CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A vulnerability in the DHCP server of Cisco Prime Network Registrar could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation of incoming DHCP traffic. An attacker could exploit this vulnerability by sending a crafted DHCP request to an affected device. A successful exploit could allow the attacker to cause a restart of the DHCP server process, causing a DoS condition.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0151 74th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco Prime Network Registrarall versions—No fix listedCNA
  • Cisco Prime Network Registrar VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cisco:prime_network_registrar:*:*:*:*:*:*:*:*8.3 to before 8.3.7.1; 9.0 to before 9.1.3; 10.0 to before 10.1.0.1VulnerableCisco
  • cpe:2.3:a:cisco:prime_network_registrar:*:*:*:*:*:*:*:* Versions 8.3 to before 8.3.7.1; 9.0 to before 9.1.3; 10.0 to before 10.1.0.1 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-3272
  2. 2026-10-03 Alias added: GHSA-rprx-wwgg-c958

References

Advisory 1

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2019-01463 Cisco Prime Network Registrar Denial of Service Vulnerability CVSS 3.0HIGH 8.6
  • TI-2016-01315 The System Configuration Protocol (SCP) core messaging interface in Cisco Prime Network… CVSS 3.0HIGH 7.5
  • TI-2020-02710 Cisco Prime Network Registrar Cross-Site Request Forgery Vulnerability CVSS 3.1HIGH 7.1
  • TI-2015-05283 Cisco Prime Network Registrar (CPNR) 8.1(3.3), 8.2(3), and 8.3(2) has a default account… CVSS 2.0HIGH 7.2
  • TI-2017-04372 Resource management flaw in Cisco Prime Network Registrar CVSS 3.0MEDIUM 5.8
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences