CVE-2022-34746

mediumpriority · track · 24EPSS 0.004 · 32 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.38% (32nd) EPSS

CVSS 5.9 · medium

Is it mine?

11 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

5.9

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 2.2 · impact 3.6

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · ENISA EU

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · security@zyxel.com.twexploitability 2.2 · impact 3.6

v3.15.4mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-331USprimary

affected products (11)

Products and version ranges known to be affected.

Zyxel Zyxel GS1900 series firmware≤ < V2.70enisa_euvdEU
zyxel gs1900-10hp firmware< 2.70\(aazi.3\)c0nvdUScpe:2.3:o:zyxel:gs1900-10hp_firmware:*:*:*:*:*:*:*:*
zyxel gs1900-16 firmware< 2.70\(aahj.3\)c0nvdUScpe:2.3:o:zyxel:gs1900-16_firmware:*:*:*:*:*:*:*:*
zyxel gs1900-24 firmware< 2.70\(aahl.3\)c0nvdUScpe:2.3:o:zyxel:gs1900-24_firmware:*:*:*:*:*:*:*:*
zyxel gs1900-24e firmware< 2.70\(aahk.3\)c0nvdUScpe:2.3:o:zyxel:gs1900-24e_firmware:*:*:*:*:*:*:*:*
zyxel gs1900-24ep firmware< 2.70\(abto.3\)c0nvdUScpe:2.3:o:zyxel:gs1900-24ep_firmware:*:*:*:*:*:*:*:*
zyxel gs1900-24hpv2 firmware< 2.70\(abtp.3\)c0nvdUScpe:2.3:o:zyxel:gs1900-24hpv2_firmware:*:*:*:*:*:*:*:*
zyxel gs1900-48 firmware< 2.70\(aahn.3\)c0nvdUScpe:2.3:o:zyxel:gs1900-48_firmware:*:*:*:*:*:*:*:*
zyxel gs1900-48hpv2 firmware< 2.70\(abtq.3\)c0nvdUScpe:2.3:o:zyxel:gs1900-48hpv2_firmware:*:*:*:*:*:*:*:*
zyxel gs1900-8 firmware< 2.70\(aahh.3\)c0nvdUScpe:2.3:o:zyxel:gs1900-8_firmware:*:*:*:*:*:*:*:*
zyxel gs1900-8hp firmware< 2.70\(aahi.3\)c0nvdUScpe:2.3:o:zyxel:gs1900-8hp_firmware:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2022-09-20modified 2026-06-17

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Related entries.

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+180 more

references (4)

External citations — patches, advisories, analysis.

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