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CVE-2020-3272

19
FAUCET Score

CVE-2020-3272 describes a denial-of-service vulnerability in the DHCP server component of Cisco Prime Network Registrar. An unauthenticated, remote attacker can exploit this by sending a specially crafted DHCP request, leading to a restart of the DHCP server process. This vulnerability has a CVSS score of 7.5 (High) due to its network-based attack vector and low attack complexity, resulting in high availability impact. While there is no known active exploitation, public exploit code, or KEV listing, it has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 8.3, < 8.3.7.1CPE matchmatch criteria
cpe:2.3:a:cisco:prime_network_registrar:*:*:*:*:*:*:*:*
>= 9.0, < 9.1.3CPE matchmatch criteria
cpe:2.3:a:cisco:prime_network_registrar:*:*:*:*:*:*:*:*
>= 10.0, < 10.1.0.1CPE matchmatch criteria
cpe:2.3:a:cisco:prime_network_registrar:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.51%
Probability of exploitation in next 30 days
EPSS Percentile
71.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0151 is in the 53rd percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-cpnr-dhcp-dos-BkEZfhLP
Vendor Advisory