CVE intelligence and bounded remediation

CVE-2022-34746 — Zyxel Gs1900-8 Firmware security vulnerability

Medium CVSS 5.9

An insufficient entropy vulnerability caused by the improper use of randomness sources with low entropy for RSA key pair generation was found in Zyxel GS1900 series firmware versions prior to V2.70. This vulnerability could allow an unauthenticated attacker to retrieve a private key by factoring the RSA modulus N in the certificate of the web administration interface.

Severity
Medium
CVSS
5.9 (3.1)
Published
2022-09-20
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-331

Affected products

  • zyxel / gs1900-8_firmware
  • zyxel / gs1900-8hp_firmware
  • zyxel / gs1900-10hp_firmware
  • zyxel / gs1900-16_firmware
  • zyxel / gs1900-24_firmware
  • zyxel / gs1900-24e_firmware

Showing 6 representative product identities from 10 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

General vulnerability remediation

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Confirm the affected component, deployment paths, reachable interfaces, and enabled features from inventories and configuration, without probing production destructively.
  • Compare the advisory's affected conditions with the repository lockfiles, build manifests, artifacts, and runtime inventory.
  • Identify data sensitivity, trust boundaries, and privilege level for every confirmed affected deployment.

Remediate safely

  • Apply a vendor-supported fix or remove the affected component or feature; record the selected change and its source in the repository.
  • Update direct and transitive dependency locks, generated artifacts, deployment manifests, and asset inventories together.
  • Add a regression test for the documented unsafe condition using inert inputs and preserve rollback instructions.

Authoritative sources

Complete CVE record and remediation plan

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