What is CVE-2023-35140?

CVE-2023-35140 is a medium-severity vulnerability in Zyxel Gs1900-10hp, classified under Improper Privilege Management. CVSS score: 5.5/10. Published 2023-11-07.

How severe is CVE-2023-35140?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Privilege escalation in Zyxel Gs1900-10hp

CVE-2023-35140

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.

Vulnerability class: Privilege Escalation

Published 2023-11-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.002 (6.7th percentile), scored 2026-11-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for… (vendor-advisory, Not Applicable, Vendor Advisory)

Frequently asked questions

What is CVE-2023-35140?: CVE-2023-35140 is a medium-severity vulnerability in Zyxel Gs1900-10hp, classified under Improper Privilege Management. CVSS score: 5.5/10. Published 2023-11-07.
How severe is CVE-2023-35140?: Medium severity. CVSS v3 base score is 5.5 out of 10.