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CVE-2020-3376

24
FAUCET Score

CVE-2020-3376 is a critical authentication bypass vulnerability in the Device Manager application of Cisco Data Center Network Manager (DCNM). An unauthenticated, remote attacker can exploit this flaw by accessing specific hosted URLs, enabling them to execute arbitrary actions and interact with DCNM functions. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with low complexity, leading to complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
11.0\(1\)CPE matchmatch criteria
cpe:2.3:a:cisco:data_center_network_manager:11.0\(1\):*:*:*:*:*:*:*
11.1\(1\)CPE matchmatch criteria
cpe:2.3:a:cisco:data_center_network_manager:11.1\(1\):*:*:*:*:*:*:*
11.2\(1\)CPE matchmatch criteria
cpe:2.3:a:cisco:data_center_network_manager:11.2\(1\):*:*:*:*:*:*:*
11.3\(1\)CPE matchmatch criteria
cpe:2.3:a:cisco:data_center_network_manager:11.3\(1\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.3HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.15%
Probability of exploitation in next 30 days
EPSS Percentile
63.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0115 is in the 49th percentile among its peer group of 36,897 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 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-dcnm-auth-bypass-JkubGpu3
Vendor Advisory