CVE-2026-8169 (GCVE-0-2026-8169)
Vulnerability from cvelistv5 – Published: 2026-07-20 17:33 – Updated: 2026-07-20 19:20
VLAI
EPSS
VEX
Title
ExtremeXOS Debug-Mode Privilege Escalation via Weak PRNG
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-20 18:26 UTC
CWE
- CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Assigner
ExtremeNetworks
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://www.extremenetworks.com/support/policies/… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Extreme Networks | Switch Engine (EXOS) |
Affected:
0 , < 31.7.4
(custom)
Affected: 32.0.0 , < 32.7.4.15 (custom) Affected: 33.0.0 , < 33.1.100 (custom) Affected: 33.2.0 , < 33.7.1 (custom) |
Date Public
2026-07-20 17:27
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