CVE-2024-38270

🔶 medium

Summary

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 Score

5.3

Medium

EPSS Score

0.2

Exploit Probability

Published Date

2024-09-10

First Seen: 2026-01-05

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 19.0% of all 365,968 vulnerabilities in our database.

#296,586

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Sep 10, 2024

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Partial

Limited system impact

SSVC data provided by CISA

Last Modified 2024-09-18

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-331

📦 Affected Products 10

Vendor	Product	Status	Affected Versions
zyxel	gs1900-10hp_firmware	Affected	< 2.80\(aazi.1\)c0
zyxel	gs1900-16_firmware	Affected	< 2.80\(aahj.1\)c0
zyxel	gs1900-24_firmware	Affected	≤ 2.80\(aahl.1\)c0
zyxel	gs1900-24e_firmware	Affected	≤ 2.80\(aahk.1\)c0
zyxel	gs1900-48_firmware	Affected	< 2.80\(aahn.1\)c0
zyxel	gs1900-8_firmware	Affected	< 2.80\(aahh.1\)c0
zyxel	gs1900-8hp_firmware	Affected	< 2.80\(aahi.1\)c0
zyxel	gs1900-24ep_firmware	Affected	< 2.80\(abto.1\)c0
zyxel	gs1900-24hpv2_firmware	Affected	< 2.80\(abtp.1\)c0
zyxel	gs1900-48hpv2_firmware	Affected	< 2.80\(abtq.1\)c0

🔗 References 1

https://www.zyxel.com/global/en/support/security-adv...

Vendor Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-7273	⚠️ high	8.8	-	A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90(AB...	2026-06-16
CVE-2024-8881	🔶 medium	6.8	0.1	A post-authentication command injection vulnerability in the CGI program in the Zyxel GS1900-48 switch firmware version ...	2024-11-12
CVE-2024-8882	🔶 medium	4.5	0.1	A buffer overflow vulnerability in the CGI program in the Zyxel GS1900-48 switch firmware version V2.80(AAHN.1)C0 and ea...	2024-11-12
CVE-2023-35140	🔶 medium	5.5	0.1	The improper privilege management vulnerability in the Zyxel GS1900-24EP switch firmware version V2.70(ABTO.5) could al...	2023-11-07
CVE-2022-45853	🔶 medium	6.7	0.0	The privilege escalation vulnerability in the Zyxel GS1900-8 firmware version V2.70(AAHH.3) and the GS1900-8HP firmwa...	2023-05-30
CVE-2022-34746	🔶 medium	5.9	0.3	An insufficient entropy vulnerability caused by the improper use of randomness sources with low entropy for RSA key pair...	2022-09-20

These CVEs affect the same products