CVE-2021-35033 - CVE House
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Status published High CVE-2021-35033

A vulnerability in specific versions of Zyxel NBG6818, NBG7815, WSQ20,...

Vulnerability Description

A vulnerability in specific versions of Zyxel NBG6818, NBG7815, WSQ20, WSQ50, WSQ60, and WSR30 firmware with pre-configured password management could allow an attacker to obtain root access of the device, if the local attacker dismantles the device and uses a USB-to-UART cable to connect the device, or if the remote assistance feature had been enabled by an authenticated user.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

NBG6818 series firmware, NBG7815 series firmware, WSQ20 series firmware, WSQ50 series firmware, WSQ60 series firmware, WSR30 series firmware
Vulnerable Versions:
1.00(ABSC.0)C0 through 1.00(ABSC.4)C0, 1.00(ABSK.0)C0 through 1.00(ABSK.6)C0, 1.00(ABOF.0)C0 through 1.00(ABOF.10)C0, 1.00(ABKJ.0)C0 through 2.20(ABKJ.6)C0, 1.00(ABND.0)C0 through 2.20(ABND.7)C0, 1.00(ABMY.0)C0 through 1.00(ABMY.11)C0

Timeline

Official Publish: November 23rd, 2021
Last Modified: August 4th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-260

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.