CVE-2026-12489 in EX3501-T0

Summary

by MITRE • 10/20/2026

An incorrect authorization vulnerability in the Data Access Layer (DAL) of Zyxel EX3501-T0 firmware versions through 5.44(ACHR.6)C0 could allow an authenticated attacker to escalate privileges by modifying the login_privilege data on an affected device.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

• Responsible: Zyxel
• Reservation: 06/17/2026
• Disclosure: 10/20/2026
• Moderation: accepted
• Entry: VDB-422652
• CPE: 20261020
• CWE: CWE-285 (confirmed)
• CVSS: 6.5 (CNA)
• EPSS: 0.00000
• KEV: no
• Activities: low

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-12489
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-12489
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-12489/