What is CVE-2021-1622?

CVE-2021-1622 is a high-severity vulnerability in Cisco 7600 Router, classified under CWE-833. CVSS score: 8.6/10. Published 2021-09-23.

How severe is CVE-2021-1622?

High severity. CVSS v3 base score is 8.6 out of 10.

Vulnerability in Cisco 7600 Router

CVE-2021-1622

A vulnerability in the Common Open Policy Service (COPS) of Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers could allow an unauthenticated, remote attacker to cause resource exhaustion, resulting in a denial of service (DoS) condition. This vulnerability is due to a deadlock condition in the code when processing COPS packets under certain conditions. An attacker could exploit this vulnerability by sending COPS packets with high burst rates to an affected device. A successful exploit could allow the attacker to cause the CPU to consume excessive resources, which prevents other control plane processes from obtaining resources and results in a DoS.

EPSS: 0.010 (59.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-1622?: CVE-2021-1622 is a high-severity vulnerability in Cisco 7600 Router, classified under CWE-833. CVSS score: 8.6/10. Published 2021-09-23.
How severe is CVE-2021-1622?: High severity. CVSS v3 base score is 8.6 out of 10.