Medium severity · published Sep 20, 2022
CVE-2022-34746
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…
5.9
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GF
Gs1900-10hp Firmware · Zyxel
before 2.70\(aazi.3\)c0 · source: NVD
GF
Gs1900-16 Firmware · Zyxel
before 2.70\(aahj.3\)c0 · source: NVD
GF
Gs1900-24 Firmware · Zyxel
before 2.70\(aahl.3\)c0 · source: NVD
GF
Gs1900-24e Firmware · Zyxel
before 2.70\(aahk.3\)c0 · source: NVD
GF
Gs1900-24ep Firmware · Zyxel
before 2.70\(abto.3\)c0 · source: NVD
GF
Gs1900-24hpv2 Firmware · Zyxel
before 2.70\(abtp.3\)c0 · source: NVD
GF
Gs1900-48 Firmware · Zyxel
before 2.70\(aahn.3\)c0 · source: NVD
GF
Gs1900-48hpv2 Firmware · Zyxel
before 2.70\(abtq.3\)c0 · source: NVD
GF
Gs1900-8 Firmware · Zyxel
before 2.70\(aahh.3\)c0 · source: NVD
GF
Gs1900-8hp Firmware · Zyxel
before 2.70\(aahi.3\)c0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-34746
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-34746
Patch
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-insufficient-entropy-vulnerability-of-gs1900-series-switches
More from Gs1900-10hp Firmware
8.8
CVE-2026-7273
Zyxel GS1900 Series Switches Stack-Based Buffer Overflow Vulnerability
9.8
CVE-2019-15800
An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0
9.8
CVE-2016-1329
Cisco NX-OS 6.0(2)U6(1) through 6.0(2)U6(5) on Nexus 3000 devices and 6.0(2)A6(1) through 6.0(2)A6(5) and 6.0(2)A7(1) on Nexus 3500 devices has hardcoded credentials, which allows…
9.8
CVE-2015-5989
Belkin F9K1102 2 devices with firmware 2.10.17 rely on client-side JavaScript code for authorization, which allows remote attackers to obtain administrative privileges via certain…
9.8
CVE-2015-5988
The web management interface on Belkin F9K1102 2 devices with firmware 2.10.17 has a blank password, which allows remote attackers to obtain administrative privileges by…