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CVE-2026-8170

ExtremeXOS Privilege Escalation via Symlink Following in File Utilities

HIGH
8.7
CVSS Score
Published: July 20, 2026 at 05:34 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 0.6%
SSVC
No known exploit

Description

The mv, cp, and rm file utilities exposed within the ExtremeXOS (EXOS) shell environment fail to safely canonicalize paths and follow symbolic links outside of the intended privilege boundary. An attacker with low-privilege CLI access can create a symbolic link that references a privileged filesystem location and then invoke the affected utilities to read, modify, or replace security-critical files outside of their authorized scope. Under certain conditions, this may enable escalation to root-level access and persistent modification of the device software stack. Exploitation is possible remotely by an attacker holding a low-privilege account, or locally via the serial console.

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-59

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