SEPTEMBER 7, 2026
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Case File

CVE-2026-8169

HIGH · CVSS 8.7 EPSS 0.28% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-20 · Last synced 2026-08-19

CyberRota Analysis

AI-Generated

ExtremeXOS is vulnerable due to its use of a poorly randomized challenge-response mechanism for authorizing access to the privileged debug-mode function, potentially allowing attackers to predict responses and gain unauthorized access. Exploitation could lead to root-level access and persistent modifications to the device's software stack, particularly affecting devices with low-privilege accounts or those accessible via physical serial console. Organizations using ExtremeXOS should prioritize addressing this vulnerability to mitigate risks associated with unauthorized access and potential system compromise.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-8169
Severity
HIGH
CVSS
8.7
EPSS
0.28%

Original NVD Description

ExtremeXOS (EXOS) uses a challenge-response mechanism to authorize access to the privileged debug-mode function. The challenge value is generated using an insufficiently random source, which under certain conditions may allow an attacker to predict the expected response and activate debug-mode without authorization. Depending on device configuration and version, this may enable escalation to root-level access and persistent modification of the device software stack. Exploitation requires either a valid low-privilege account on the device (remote scenario) or physical serial console access (local scenario). This vulnerability is distinct from CVE-2017-14329, which addressed a different issue involving Python script privileges. Extreme would like to thank Hadrien Barral (Université Gustave Eiffel) and Georges-Axel Jaloyan (French Ministry of the Interior) for responsible disclosure of their findings.