THREATPORT/VULNERABILITY/CVE-2021-40113
CRITICAL SEVERITY

CVE-2021-40113

Catalyst Pon Switch Cgp Ont 1p Firmware vulnerability

CVSS
10.0
EPSS
4.6%
EPSS pct
91th
Exploited
No known
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.
Affected vendor
Cisco
Affected product
Catalyst Pon Switch Cgp Ont 1p Firmware
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-284 — Improper Access Control
  • CWE-78 — OS Command Injection
Published
2021-11-04

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 4.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2021-40113

  • Confirm whether Cisco Catalyst Pon Switch Cgp Ont 1p Firmware is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-40113.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-40113

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