CVE-2024-38270

Name: CVE-2024-38270
Creator: NVD / NIST
Published: 2024-09-10T02:15:09.78+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.21%

Last modified Jun 17, 2026

CVE-2024-38270 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.21%

11.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-331

Affected Software

Vendor	Product	Versions
Zyxel	Gs1900-48hpv2 Firmware	< 2.80\(abtq.1\)c0
Zyxel	Gs1900-48 Firmware	< 2.80\(aahn.1\)c0
Zyxel	Gs1900-24hpv2 Firmware	< 2.80\(abtp.1\)c0
Zyxel	Gs1900-24ep Firmware	< 2.80\(abto.1\)c0
Zyxel	Gs1900-24e Firmware	<= 2.80\(aahk.1\)c0
Zyxel	Gs1900-24 Firmware	<= 2.80\(aahl.1\)c0
Zyxel	Gs1900-16 Firmware	< 2.80\(aahj.1\)c0
Zyxel	Gs1900-10hp Firmware	< 2.80\(aazi.1\)c0
Zyxel	Gs1900-8hp Firmware	< 2.80\(aahi.1\)c0
Zyxel	Gs1900-8 Firmware	< 2.80\(aahh.1\)c0

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-09-10-2024Vendor Advisory

Timeline

Published: Sep 10, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-38270?

How severe is CVE-2024-38270?

CVE-2024-38270 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.

How do I fix CVE-2024-38270?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-38270?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST