CVE-2020-3168: cisco cisco nx-os software Resource Management Errors
Vulnerability summary
CVE-2020-3168 is a high (CVSS 7.5) Resource Management Errors vulnerability in cisco cisco nx-os software. EPSS estimates a 1.60% chance of exploitation in the next 30 days, higher than 75.3% of scored vulnerabilities.
Timeline
- 26-02-2020PublishedVulnerability first disclosed.
- 15-11-2024Last modifiedVulnerability information updated.
Description
A vulnerability in the Secure Login Enhancements capability of Cisco Nexus 1000V Switch for VMware vSphere could allow an unauthenticated, remote attacker to cause an affected Nexus 1000V Virtual Supervisor Module (VSM) to become inaccessible to users through the CLI. The vulnerability is due to improper resource allocation during failed CLI login attempts when login parameters that are part of the Secure Login Enhancements capability are configured on an affected device. An attacker could exploit this vulnerability by performing a high amount of login attempts against the affected device. A successful exploit could cause the affected device to become inaccessible to other users, resulting in a denial of service (DoS) condition requiring a manual power cycle of the VSM to recover.
CVSS metrics
4 scores · 2 sources · 3 versions- NVDNIST7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.60%
Chance of exploitation in the next 30 days
Percentile
75%
Versus all other CVEs
30-day change
0.00 pp
From 1.60% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Cisco2 products
- cisco nx-os software≥ unspecified, < n/a
- nx-os5.2\(1\)sv3\(4.1a\)
1 vendor · 2 products
References
1 links- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-nexus-1000v-dosVendor AdvisoryX Refsource CISCO