CVE-2024-38270
mediumpriority · track · 26EPSS 0.002 · 11 %ileEUUSEPSS · scored 2026-10-27
An insufficient entropy vulnerability caused by the improper use of a randomness function with low entropy for web authentication tokens generation exists in the Zyxel GS1900-10HP firmware version V2.80(AAZI.0)C0. This vulnerability could allow a LAN-based attacker a slight chance to gain a valid session token if multiple authenticated sessions are alive.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (11)
Products and version ranges known to be affected.
- zyxel gs1900-10hp firmware< 2.80\(aazi.1\)c0nvdUScpe:2.3:o:zyxel:gs1900-10hp_firmware:*:*:*:*:*:*:*:*
- zyxel gs1900-24ep firmware< 2.80\(abto.1\)c0nvdUScpe:2.3:o:zyxel:gs1900-24ep_firmware:*:*:*:*:*:*:*:*
- zyxel gs1900-24hpv2 firmware< 2.80\(abtp.1\)c0nvdUScpe:2.3:o:zyxel:gs1900-24hpv2_firmware:*:*:*:*:*:*:*:*
- zyxel gs1900-48hpv2 firmware< 2.80\(abtq.1\)c0nvdUScpe:2.3:o:zyxel:gs1900-48hpv2_firmware:*:*:*:*:*:*:*:*
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (4)
External citations — patches, advisories, analysis.
- https://cxsecurity.com/cveshow/CVE-2024-38270/cnnvd
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-insufficient-entropy-vulnerability-for-web-authentication-tokens-generation-in-gs1900-series-switches-09-10-2024cnnvd
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-insufficient-entropy-vulnerability-for-web-authentication-tokens-generation-in-gs1900-series-switches-09-10-2024enisa_euvd
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-insufficient-entropy-vulnerability-for-web-authentication-tokens-generation-in-gs1900-series-switches-09-10-2024Vendor Advisorynvd
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