What is the vulnerability ID for this security issue?

The vulnerability ID for this security issue is CVE-2022-34746.

What is the severity level of the CVE-2022-34746 vulnerability?

The severity level of the CVE-2022-34746 vulnerability is medium (5.9).

Which Zyxel GS1900 series firmware versions are affected by this vulnerability?

Zyxel GS1900 series firmware versions prior to V2.70 are affected by this vulnerability.

How can an attacker exploit this vulnerability?

An unauthenticated attacker can exploit this vulnerability to retrieve a private key by factoring the insufficiently generated RSA key pair.

Is there a fix available for the CVE-2022-34746 vulnerability?

Yes, a fix is available for the CVE-2022-34746 vulnerability. It is recommended to update to firmware version V2.70 or higher.

Vulnerability/
CVE-2022-34746

medium

5.9

CWE

331

20/9/2022

22/9/2022

CVE-2022-34746

First published: Tue Sep 20 2022(Updated: )

Credit: security@zyxel.com.tw

Affected Software	Affected Version	How to fix
Zyxel GS1900-8 firmware	<2.70\(aahh.3\)c0
Zyxel GS1900-8
Zyxel Gs1900-8hp Firmware	<2.70\(aahi.3\)c0
Zyxel Gs1900-8hp
Zyxel Gs1900-10hp Firmware	<2.70\(aazi.3\)c0
Zyxel Gs1900-10hp
Zyxel Gs1900-16 Firmware	<2.70\(aahj.3\)c0
Zyxel Gs1900-16
Zyxel Gs1900-24 Firmware	<2.70\(aahl.3\)c0
Zyxel GS1900-24
Zyxel Gs1900-24e Firmware	<2.70\(aahk.3\)c0
Zyxel GS1900-24E
Zyxel Gs1900-24ep Firmware	<2.70\(abto.3\)c0
Zyxel GS1900-24EP
Zyxel Gs1900-24hpv2 Firmware	<2.70\(abtp.3\)c0
Zyxel Gs1900-24hpv2
Zyxel Gs1900-48 Firmware	<2.70\(aahn.3\)c0
Zyxel Gs1900-48
Zyxel Gs1900-48hpv2 Firmware	<2.70\(abtq.3\)c0
Zyxel Gs1900-48hpv2

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Reference Links

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

Frequently Asked Questions

What is the vulnerability ID for this security issue?
The vulnerability ID for this security issue is CVE-2022-34746.
What is the severity level of the CVE-2022-34746 vulnerability?
The severity level of the CVE-2022-34746 vulnerability is medium (5.9).
Which Zyxel GS1900 series firmware versions are affected by this vulnerability?
Zyxel GS1900 series firmware versions prior to V2.70 are affected by this vulnerability.
How can an attacker exploit this vulnerability?
An unauthenticated attacker can exploit this vulnerability to retrieve a private key by factoring the insufficiently generated RSA key pair.
Is there a fix available for the CVE-2022-34746 vulnerability?
Yes, a fix is available for the CVE-2022-34746 vulnerability. It is recommended to update to firmware version V2.70 or higher.

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