Unrated severityNVD Advisory· Published Sep 20, 2022· Updated May 29, 2025

CVE-2022-34746

Description

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.

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Affected products

Zyxel/GS1900 seriesllm-create
Range: <V2.70
Zyxel/Zyxel GS1900 series firmwarev5
Range: < V2.70

Patches

Vulnerability mechanics

References

www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-insufficient-entropy-vulnerability-of-gs1900-series-switchesmitrex_refsource_CONFIRM

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