CVE-2018-1164

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-02-21 · updated 2026-06-17
Weakness: CWE-306

Description

This vulnerability allows remote attackers to cause a denial-of-service condition on vulnerable installations of ZyXEL P-870H-51 DSL Router 1.00(AWG.3)D5. Authentication is not required to exploit this vulnerability. The specific flaw exists within numerous exposed CGI endpoints. The vulnerability is caused by improper access controls that allow access to critical functions without authentication. An attacker can use this vulnerability to reboot affected devices, along with other actions. Was ZDI-CAN-4540.

Affected products

ZyXEL P-870H-51 DSL Router: 1.00(awg.3)d5

References

https://zerodayinitiative.com/advisories/ZDI-18-135
https://zerodayinitiative.com/advisories/ZDI-18-135

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