CVE-2021-35030: XSS
First published: Mon Jul 26 2021(Updated: )
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.
Credit: security@zyxel.com.tw
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zyxel GS1900-8 firmware | <2.70 | |
| Zyxel GS1900-8 | ||
| Zyxel GS1900-8HP firmware | <2.70 | |
| Zyxel GS1900-8HP firmware | ||
| Zyxel GS1900-10HP firmware | <2.70 | |
| Zyxel GS1900-10HP firmware | ||
| Zyxel GS1900-16 | <2.70 | |
| Zyxel GS1900-16 Firmware | ||
| Zyxel GS1900-24E Firmware | <2.70 | |
| Zyxel GS1900-24E Firmware | ||
| Zyxel GS1900-24EP Firmware | <2.70 | |
| Zyxel GS1900-24EP Firmware | ||
| ZyXEL GS1900-24 firmware | <2.70 | |
| Zyxel GS1900-24E Firmware | ||
| Zyxel GS1900-24HPv2 | <2.70 | |
| Zyxel GS1900-24HP Firmware | ||
| Zyxel GS1900-24HPv2 | <2.70 | |
| Zyxel GS1900-48HPv2 | ||
| Zyxel GS1900-48 Firmware | <2.70 | |
| Zyxel GS1900-48HP Firmware | ||
| Zyxel GS1900-48HPv2 Firmware | <2.70 | |
| Zyxel GS1900-48HP Firmware | ||
| Zyxel GS1900-48HPv2 | <2.70 | |
| Zyxel GS1900-48HPv2 Firmware |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID for this vulnerability is CVE-2021-35030.
What is the severity level of CVE-2021-35030?
The severity level of CVE-2021-35030 is medium (4.3).
Which software is affected by CVE-2021-35030?
The Zyxel GS1900-8 firmware versions up to and excluding V2.70 are affected by CVE-2021-35030.
What is the impact of CVE-2021-35030?
CVE-2021-35030 could allow an authenticated, local user to perform a cross-site scripting (XSS) attack via a crafted LLDP packet.
Where can I find more information about CVE-2021-35030?
You can find more information about CVE-2021-35030 at the Zyxel security advisory page: https://www.zyxel.com/support/Zyxel_security_advisory_for_XSS_vulnerability_of_GS1900_series_switches.shtml
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- agent/references
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- agent/weakness
- agent/severity
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/event
- agent/first-publish-date
- agent/source
- agent/tags
- agent/softwarecombine
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/zyxel
- canonical/zyxel gs1900-8 firmware
- canonical/zyxel gs1900-8
- canonical/zyxel gs1900-8hp firmware
- canonical/zyxel gs1900-10hp firmware
- canonical/zyxel gs1900-16
- canonical/zyxel gs1900-16 firmware
- canonical/zyxel gs1900-24e firmware
- canonical/zyxel gs1900-24ep firmware
- canonical/zyxel gs1900-24 firmware
- canonical/zyxel gs1900-24hpv2
- canonical/zyxel gs1900-24hp firmware
- canonical/zyxel gs1900-48hpv2
- canonical/zyxel gs1900-48 firmware
- canonical/zyxel gs1900-48hp firmware
- canonical/zyxel gs1900-48hpv2 firmware