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Case File

CVE-2021-40112

CRITICAL · CVSS 10 EPSS 1.39%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-11-04 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 10.0. It affects Cisco. It may be remotely exploitable.

CVE
CVE-2021-40112
Severity
CRITICAL
CVSS
10
EPSS
1.39%
Cisco

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)