CVE-2026-8170
Symlink bug in ExtremeXOS mv/cp/rm allows low-privilege users to modify privileged files
Is CVE-2026-8170 being exploited?
Not confirmed. CVE-2026-8170 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.56% probability of exploitation in the next 30 days.
How severe is CVE-2026-8170?
CVE-2026-8170 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-8170?
Not known from our data. No patch reference has been recorded for CVE-2026-8170, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-8170 affect?
CVE-2026-8170 affects ExtremeXOS (EXOS) on Extreme Networks devices, EXOS shell utilities: mv, cp, rm. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-8170?
Apply vendor patch when available; immediately restrict low-privilege CLI access and remove/untrusted accounts
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Low-privilege CLI user can read/modify/replace security-critical files, potentially escalate to root and persistently compromise device software.
Immediate action required
- affected< 31.7.4
- affected>= 32.0.0 and < 32.7.4.15
- affected>= 33.0.0 and < 33.1.100
- affected>= 33.2.0 and < 33.7.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.