CVE-2021-1367
MEDIUMCisco NX-OS - Unauthenticated Denial of Service via Crafted PIM Packet
Title source: llmDescription
A vulnerability in the Protocol Independent Multicast (PIM) feature of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending a crafted PIM packet to an affected device. A successful exploit could allow the attacker to cause a traffic loop, resulting in a DoS condition.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
x_refsource_cisco
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-pim-dos-Y8SjMz4
Scores
CVSS v3
4.3
EPSS
0.0022
EPSS Percentile
44.6%
Attack Vector
ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-20
Status
published
Products (1)
cisco/nx-os
9.3\(5\)
Published
Feb 24, 2021
Tracked Since
Feb 18, 2026