CVE-2024-38270

MEDIUM

Zyxel GS1900-10HP <V2.80(AAZI.0)C0 - Info Disclosure

Title source: llm

Description

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.

References (1)

[Vendor Advisory] 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

Scores

CVSS v3 5.3

EPSS 0.0022

EPSS Percentile 45.2%

Attack Vector ADJACENT_NETWORK

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-331

Status published

Products (10)

zyxel/gs1900-10hp_firmware < 2.80\(aazi.1\)c0

zyxel/gs1900-16_firmware < 2.80\(aahj.1\)c0

zyxel/gs1900-24_firmware < 2.80\(aahl.1\)c0

zyxel/gs1900-24e_firmware < 2.80\(aahk.1\)c0

zyxel/gs1900-24ep_firmware < 2.80\(abto.1\)c0

zyxel/gs1900-24hpv2_firmware < 2.80\(abtp.1\)c0

zyxel/gs1900-48_firmware < 2.80\(aahn.1\)c0

zyxel/gs1900-48hpv2_firmware < 2.80\(abtq.1\)c0

zyxel/gs1900-8_firmware < 2.80\(aahh.1\)c0

zyxel/gs1900-8hp_firmware < 2.80\(aahi.1\)c0

Published Sep 10, 2024

Tracked Since Feb 18, 2026