CVE-2023-35140 Privilege escalation in GS1900-24EP firmware

What is CVE-2023-35140?

CVE-2023-35140 is a medium-severity vulnerability in Zyxel GS1900-24EP firmware, published on 7 Nov 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The improper privilege management vulnerability in the Zyxel GS1900-24EP switch firmware version V2.70(ABTO.5) could allow an authenticated local user with read-only access to modify system settings on a vulnerable device.

Weakness: CWE-269

Which versions are affected by CVE-2023-35140?

It affects 10 products.

Products include Zyxel Gs1900-10hp Firmware, Zyxel Gs1900-16 Firmware, Zyxel Gs1900-24 Firmware, Zyxel Gs1900-24e Firmware, Zyxel Gs1900-24ep Firmware, Zyxel Gs1900-24hpv2 Firmware and 4 more.

How do I fix CVE-2023-35140?

No fix has been published for CVE-2023-35140 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-35140 being exploited?

There is no known exploitation of CVE-2023-35140 in the wild and no public exploit code.

Other vulnerabilities in Zyxel GS1900-24EP firmware

• CVE-2026-7273 Zyxel GS1900 Series Switches Stack-Based Buffer Overflow Exploited High 8.8
• CVE-2019-15800 Command injection in n/a Critical 9.8
• CVE-2015-5988 Hardcoded credentials in n/a Critical 9.8
• CVE-2015-5989 Auth bypass in n/a Critical 9.8
• CVE-2019-15803 Auth bypass in n/a Critical 9.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-wcc8-wmx2-r8gp.