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CVE-2026-12489

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 authenticate…

Impact

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.

Affected products

Vendor	Product	Affected versions
Zyxel	Zyxel EX3501-T0 Firmware	through 5.44

Versions were read from the advisory text. No structured product data has been published for this record yet.

Weakness classification

CWE-863

References

NVD record
CVE.org record
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-incorrect-authorization-vulnerability-in-the-dal-of-certain-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-and-wireless-extenders-10-20-2026