VULNERABILITY INTELLIGENCE

CVE-2021-40112

CVSS score10 CRITICAL
EPSS probability1.39%
CISA KEVNot currently listed
Published2021-11-04
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Description

Multiple vulnerabilities in the web-based management interface of the Cisco Catalyst Passive Optical Network (PON) Series Switches Optical Network Terminal (ONT) could allow an unauthenticated, remote attacker to perform the following actions: Log in with a default credential if the Telnet protocol is enabled Perform command injection Modify the configuration For more information about these vulnerabilities, see the Details section of this advisory.

Weakness classification

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

Primary references