CVE-2021-1586
A vulnerability in the Multi-Pod or Multi-Site network configurations for Cisco Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode could allow an unauthenticated, remote attacker to unexpectedly restart the device, resulting in a denial of service (DoS) condition. This vulnerability exists because TCP traffic sent to a specific port on an affected device is not properly sanitized. An attacker could exploit this vulnerability by sending crafted TCP data to a specific port that is listening on a public-facing IP address for the Multi-Pod or Multi-Site configuration. A successful exploit could allow the attacker to cause the device to restart unexpectedly, resulting in a DoS condition.
EPSS 0.08% · 23.8th percentile
Risk Scores
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| cisco | nx-os | *, * |
| Cisco | Cisco NX-OS System Software in ACI Mode | n/a |
Exploit Intelligence
Timeline
- Aug 25, 2021 CVE Published
- Aug 26, 2021 EPSS Score
- Oct 23, 2021 EPSS Score
- Dec 20, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 17, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- Apr 16, 2022 EPSS Score
- Jun 13, 2022 EPSS Score
- Aug 11, 2022 EPSS Score
- Oct 8, 2022 EPSS Score
- Dec 5, 2022 EPSS Score
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ngoam-dos-LTDb9Hv advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-mpls-oam-dos-sGO9x5GM advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-n9kaci-queue-wedge-cLDDEfKF advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-n9kaci-tcp-dos-YXukt6gM advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-capic-frw-Nt3RYxR2 advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-capic-chvul-CKfGYBh8 advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-capic-pesc-pkmGK4J advisory
- https://nvd.nist.gov/vuln/detail/CVE-2021-1586 advisory