XSS in Zyxel Nbg-418n
CVE-2023-22921
A cross-site scripting (XSS) vulnerability in the Zyxel NBG-418N v2 firmware versions prior to V1.00(AARP.14)C0 could allow a remote authenticated attacker with administrator privileges to store malicious scripts using a web management interface parameter, resulting in denial-of-service (DoS) conditions on an affected device.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:H.
EPSS exploit prediction
EPSS: 0.005 (40.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Zyxel Nbg-418n — versions v2
- Zyxel Nbg-418n Firmware
- Zyxel Nbg-418n V2 Firmware — versions < V1.00(AARP.14)C0
Weakness classification (CWE)
References
- www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for… (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-22921?
- CVE-2023-22921 is a high-severity vulnerability in Zyxel Nbg-418n, classified under Cross-site Scripting. CVSS score: 7.5/10. Published 2023-05-01.
- How severe is CVE-2023-22921?
- High severity. CVSS v3 base score is 7.5 out of 10.