CVE-2023-20076: Cisco 807 Industrial Integrated Services Router Firmware

High severity, CVSS 8.8. EPSS: 1.5% chance of exploitation in the next 30 days.

A vulnerability in the Cisco IOx application hosting environment could allow an authenticated, remote attacker to execute arbitrary commands as root on the underlying host operating system. This vulnerability is due to incomplete sanitization of parameters that are passed in for activation of an application. An attacker could exploit this vulnerability by deploying and activating an application in the Cisco IOx application hosting environment with a crafted activation payload file. A successful exploit could allow the attacker to execute arbitrary commands as root on the underlying host operating system.

Affected products

• Cisco 807 Industrial Integrated Services Router Firmware: before 15.9\(3\) (fixed in 15.9\(3\)); version 15.9(3)m only; version 15.9(3)m1 only; version 15.9(3)m2 only; version 15.9(3)m2a only; version 15.9(3)m3 only; …
• Cisco 809 Industrial Integrated Services Router Firmware: before 15.9\(3\) (fixed in 15.9\(3\)); version 15.9(3)m only; version 15.9(3)m1 only; version 15.9(3)m2 only; version 15.9(3)m2a only; version 15.9(3)m3 only; …
• Cisco 829 Industrial Integrated Services Router Firmware: before 15.9\(3\) (fixed in 15.9\(3\)); version 15.9(3)m only; version 15.9(3)m1 only; version 15.9(3)m2 only; version 15.9(3)m2a only; version 15.9(3)m3 only; …
• Cisco CGR1000 Firmware: before 1.16.0.1 (fixed in 1.16.0.1)
• Cisco CGR1240 Firmware: before 1.16.0.1 (fixed in 1.16.0.1)
• Cisco IC3000 Industrial Compute Gateway: before 1.4.2 (fixed in 1.4.2)
• Cisco IOS XE: before 17.6.5 (fixed in 17.6.5); from 17.9.0, before 17.9.2 (fixed in 17.9.2); version 17.10.0 only
• Cisco Iox: affected versions not specified
• Cisco IR510 Wpan Firmware: before 1.10.0.1 (fixed in 1.10.0.1)

Published 2023-02-12. Last modified 2026-06-17.