Vulnerability in Cisco 1000_integrated_services_router

CVE-2021-1621

A vulnerability in the Layer 2 punt code of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a queue wedge on an interface that receives specific Layer 2 frames, resulting in a denial of service (DoS) condit…

EPSS: 0.003 (26.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:A/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-2021-1621?
CVE-2021-1621 is a high-severity vulnerability in Cisco 1000_integrated_services_router, classified under CWE-399. CVSS score: 7.4/10. Published 2021-09-23.
How severe is CVE-2021-1621?
High severity. CVSS v3 base score is 7.4 out of 10.