CVE-2021-35030
Last modified
CVE-2021-35030 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. A vulnerability was found in the CGI program in Zyxel GS1900-8 firmware version V2.60, that did not properly sterilize packet contents and could allow an authenticated, local user to perform a cross-site scripting (XSS) attack via a crafted LLDP packet.. EPSS estimates a 0.27% chance of exploitation in the next 30 days.
Description
A vulnerability was found in the CGI program in Zyxel GS1900-8 firmware version V2.60, that did not properly sterilize packet contents and could allow an authenticated, local user to perform a cross-site scripting (XSS) attack via a crafted LLDP packet.
Metrics
CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | Gs1900-8 Firmware | < 2.70 |
| Zyxel | Gs1900-8hp Firmware | < 2.70 |
| Zyxel | Gs1900-10hp Firmware | < 2.70 |
| Zyxel | Gs1900-16 Firmware | < 2.70 |
| Zyxel | Gs1900-24e Firmware | < 2.70 |
| Zyxel | Gs1900-24ep Firmware | < 2.70 |
| Zyxel | Gs1900-24 Firmware | < 2.70 |
| Zyxel | Gs1900-24hp Firmware | < 2.70 |
| Zyxel | Gs1900-24hpv2 Firmware | < 2.70 |
| Zyxel | Gs1900-48 Firmware | < 2.70 |
| Zyxel | Gs1900-48hp Firmware | < 2.70 |
| Zyxel | Gs1900-48hpv2 Firmware | < 2.70 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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