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) condition. This vulnerability is due to improper handling of certain Layer 2 frames. An attacker could exploit this vulnerability by sending specific Layer 2 frames on the segment the router is connected to. A successful exploit could allow the attacker to cause a queue wedge on the interface, resulting in a DoS condition.
Published 2021-09-23 03:15:13
Updated 2023-05-22 18:57:25
View at NVD,   CVE.org
Vulnerability category: Denial of service

Exploit prediction scoring system (EPSS) score for CVE-2021-1621

0.06%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 25 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-1621

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
3.3
LOW AV:A/AC:L/Au:N/C:N/I:N/A:P
6.5
2.9
NIST
7.4
HIGH CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
2.8
4.0
Cisco Systems, Inc.
7.4
HIGH CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
2.8
4.0
NIST

CWE ids for CVE-2021-1621

  • Assigned by: ykramarz@cisco.com (Secondary)

References for CVE-2021-1621

Products affected by CVE-2021-1621

This web site uses cookies for managing your session, storing preferences, website analytics and additional purposes described in our privacy policy.
By using this web site you are agreeing to CVEdetails.com terms of use!