Input Validation Flaw in Zyxel GS1900 Devices
CVE-2019-15800

9.8CRITICAL

Key Information:

Vendor

Zyxel
Status
Gs1900-8 Firmware
Vendor
CVE Published:
14 November 2019

What is CVE-2019-15800?

A vulnerability exists in Zyxel GS1900 switches due to insufficient input validation in certain library functions. This flaw can potentially allow an attacker to exploit other vulnerabilities to execute arbitrary commands on the devices. Although the affected functions are not currently utilized, their existence in prior firmware versions poses a risk for exploitation. This emphasizes the importance of keeping firmware updated to mitigate potential security threats.

References

https://jasper.la/exploring-zyxel-gs1900-firmware-with-gh...
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https://www.zyxel.com/support/gs1900-switch-vulnerabiliti...
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CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.