VULNERABILITY INTELLIGENCE

CVE-2021-1243

CVSS score5.3 MEDIUM
EPSS probability1.29%
CISA KEVNot currently listed
Published2021-02-04
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Description

A vulnerability in the Local Packet Transport Services (LPTS) programming of the SNMP with the management plane protection feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to allow connections despite the management plane protection that is configured to deny access to the SNMP server of an affected device. This vulnerability is due to incorrect LPTS programming when using SNMP with management plane protection. An attacker could exploit this vulnerability by connecting to an affected device using SNMP. A successful exploit could allow the attacker to connect to the device on the configured SNMP ports. Valid credentials are required to execute any of the SNMP requests.

Weakness classification

  • psirt@cisco.com: CWE-284
  • nvd@nist.gov: NVD-CWE-Other

Primary references