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CVE-2026-8169

ExtremeXOS Debug-Mode Privilege Escalation via Weak PRNG

HIGH
8.7
CVSS Score
Published: July 20, 2026 at 05:33 PM UTC
Updated: October 24, 2026 at 08:10 PM UTC
1 product affected across 1 vendorExtremexos

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Severity
HIGH8.7
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Extremexos· Extremenetworks
90%
0 ≤ v < 31.7.432.0.0 ≤ v < 32.7.4.1533.0.0 ≤ v < 33.1.10033.2.0 ≤ v < 33.7.1032.0.033.0.033.2.0
Affected range stops below 31.7.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 32.7.4.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 33.1.100, so it looks safe — our inference, not a vendor statement
Affected range stops below 33.7.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: cverecord
https://www.extremenetworks.com/support/policies/product-security

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGHExtremeNetworks
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-338

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