CVE-2020-3272

Cisco Prime Network Registrar DHCP Denial of Service Vulnerability

HIGH
7.5
CVSS Score
Published: May 22, 2020 at 05:15 AM UTC
Updated: June 17, 2026 at 03:17 AM UTC
1 product affected across 1 vendorPrime Network Registrar

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Severity
HIGH7.5
Exploit prediction
EPSS 2%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

10.0 ≤ v < 10.1.0.18.3 ≤ v < 8.3.7.19.0 ≤ v < 9.1.3
Affected range stops below 10.1.0.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.3.7.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.1.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20

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