Critical 10.0Published Jan 9, 2026

CVE-2025-64093Unauthenticated Remote Code Execution via the device hostname

Updated under an hour ago (Oct 26, 2026, 7:10 PM ET)

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It affects Zenitel ICX500 and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Zenitel ICX500

Exploited in the last 30 days

Remote Code Execution vulnerability that allows unauthenticated attackers to inject arbitrary commands into the hostname of the device.

CVSS: 10.0 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-77
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: NCSC-NL
NVD analysis: Analyzed
Record last updated: Jan 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Zenitel ICX500 zenitel:icx500 (from the name)	before 1.4.3.3	CNA record
Zenitel ICX510 zenitel:icx510 (from the name)	before 1.4.3.3	CNA record
zenitel icx500_firmware zenitel:icx500_firmware	before 1.4.3.3	NVD
zenitel icx510_firmware zenitel:icx510_firmware	before 1.4.3.3	NVD

References

References

https://www.zenitel.com/sites/default/files/2025-12/A100K12333%20Zenitel%20Security%20Advisory.pdf	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.