CVE-2021-40113 : faille critique cisco catalyst pon switch cgp-ont-1p… (CVSS 9.8)

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.

Sévérité

Critique (CVSS 9.8)

Vecteur CVSS

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation active

Non signalée par la CISA

Publication

4 nov. 2021

Dernière mise à jour

17 juin 2026

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• Fiche CVE-2021-40113 sur le NVD (NIST)
• tools.cisco.com/security/center/content/CiscoSecurityAdvisory/…