Main Vulnerability Database Vulnerabilities #VU159416

Out-of-bounds write in ZyXEL Communications Corp. products - CVE-2026-107441

Published: November 5, 2026

Vulnerability identifier: #VU159416

CSH Severity: Critical

CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-107441

CWE-ID: CWE-787

Exploitation vector: Remote access

Exploit availability: The vulnerability is being exploited in the wild

Vulnerability details

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error in the CGI program. A remote non-authenticated attacker can send specially crafted HTTP POST requests to the affected device, trigger an out-of-bounds write and execute arbitrary code on the target system.

Note, the vulnerability is being actively exploited in the wild.

Affected software

GS1900-8
GS1900-8HP
GS1900-16
GS1900-24E
GS1900-24
GS1900-48
GS1900-10HP
GS1900-24EP
GS1900-24HPv2
GS1900-48HPv2

How to mitigate CVE-2026-107441

Install updates from vendor's website.

GS1900-8 - update to 2.90(AAHH.3)C0
GS1900-8HP - update to 2.90(AAHI.3)C0
GS1900-16 - update to 2.90(AAHJ.3)C0
GS1900-24E - update to 2.90(AAHK.3)C0
GS1900-24 - update to 2.90(AAHL.3)C0
GS1900-48 - update to 2.90(AAHN.3)C0
GS1900-10HP - update to 2.90(AAZI.3)C0
GS1900-24EP - update to 2.90(ABTO.3)C0
GS1900-24HPv2 - update to 2.90(ABTP.3)C0
GS1900-48HPv2 - update to 2.90(ABTQ.3)C0

External References

Related Security Bulletins