Is CVE-2021-35029 actively exploited?

CVE-2021-35029 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2021-35029?

CVE-2021-35029 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2021-35029?

Patch guidance is available from zyxel security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-35029.

Fix CVE-2021-35029 - CRITICAL zyxel usg1900 firmware

Q: Which products are affected by CVE-2021-35029?

37 products: zyxel usg1900 firmware, zyxel usg1100 firmware, zyxel usg310 firmware, zyxel usg210 firmware, zyxel usg110 firmware, and 32 more.

Description

An authentication bypasss vulnerability in the web-based management interface of Zyxel USG/Zywall series firmware versions 4.35 through 4.64 and USG Flex, ATP, and VPN series firmware versions 4.35 through 5.01, which could allow a remote attacker to execute arbitrary commands on an affected device.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-287 · Improper Authentication CWE-287 · Improper Authentication

Metadata

Primary Vendor: ZYXEL
Published: 7/2/2021
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

zyxel : usg1900_firmwarezyxel : usg1100_firmwarezyxel : usg310_firmwarezyxel : usg210_firmwarezyxel : usg110_firmwarezyxel : usg40_firmwarezyxel : usg40w_firmwarezyxel : usg60_firmwarezyxel : usg60w_firmwarezyxel : usg300_firmwarezyxel : usg1000_firmwarezyxel : usg2000_firmwarezyxel : usg20_firmwarezyxel : usg20w_firmwarezyxel : usg50_firmwarezyxel : usg100_firmwarezyxel : usg200_firmwarezyxel : usg_flex_100_firmwarezyxel : usg_flex_200_firmwarezyxel : usg_flex_500_firmwarezyxel : usg_flex_100w_firmwarezyxel : usg_flex_700_firmwarezyxel : zywall_atp100_firmwarezyxel : zywall_atp100w_firmwarezyxel : zywall_atp200_firmwarezyxel : zywall_atp500_firmwarezyxel : zywall_atp700_firmwarezyxel : zywall_atp800_firmwarezyxel : zywall_vpn50_firmwarezyxel : zywall_vpn100_firmwarezyxel : zywall_vpn300_firmwarezyxel : usg20-vpn_firmwarezyxel : usg20w-vpn_firmwarezyxel : usg2200-vpn_firmwarezyxel : zywall_110_firmwarezyxel : zywall_310_firmwarezyxel : zywall_1100_firmware

Remediation Guidance

Executive Summary

View on NIST NVD