CVE-2024-38270

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.3 MEDIUM
ADJACENT_NETWORK
HIGH
NONE
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
ZyxelCNA
5.3 MEDIUM
ADJACENT_NETWORK
HIGH
NONE
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 13%
VendorProductVersion
zyxelgs1900-48hpv2_firmware
𝑥
< 2.80\(abtq.1\)c0
zyxelgs1900-48_firmware
𝑥
< 2.80\(aahn.1\)c0
zyxelgs1900-24hpv2_firmware
𝑥
< 2.80\(abtp.1\)c0
zyxelgs1900-24ep_firmware
𝑥
< 2.80\(abto.1\)c0
zyxelgs1900-24e_firmware
𝑥
≤ 2.80\(aahk.1\)c0
zyxelgs1900-24_firmware
𝑥
≤ 2.80\(aahl.1\)c0
zyxelgs1900-16_firmware
𝑥
< 2.80\(aahj.1\)c0
zyxelgs1900-10hp_firmware
𝑥
< 2.80\(aazi.1\)c0
zyxelgs1900-8hp_firmware
𝑥
< 2.80\(aahi.1\)c0
zyxelgs1900-8_firmware
𝑥
< 2.80\(aahh.1\)c0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
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-09-10-2024