VDB

CVE-2021-1621

CVE-2021-1621 PUBLISHED CVSS 7.400000095367432 HIGH

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.

EPSS 0.09% · 25.0th percentile

Risk Scores

CVSS 3.1
7.400000095367432
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS Score
0.09%
25.0th percentile

Affected Products

VendorProductVersions
ciscoios_xe0, 0, 0
CiscoCisco IOS XE Software*

Timeline

  • Sep 23, 2021 CVE Published
  • Sep 23, 2021 EPSS Score
  • Nov 19, 2021 EPSS Score
  • Jan 6, 2022 EPSS Score
  • Jan 15, 2022 EPSS Score
  • Mar 14, 2022 EPSS Score
  • Apr 1, 2022 EPSS Score
  • May 10, 2022 EPSS Score
  • Jul 6, 2022 EPSS Score
  • Sep 2, 2022 EPSS Score
  • Oct 29, 2022 EPSS Score
  • Dec 26, 2022 EPSS Score

References

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