CVE-2018-1164

moderate-risk
Published 2018-02-21

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.

Do I need to act?

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14.8% chance of exploitation in next 30 days
EPSS score — higher than 85% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Zyxel

References (2)

Third Party Advisory https://zerodayinitiative.com/advisories/ZDI-18-135
Third Party Advisory https://zerodayinitiative.com/advisories/ZDI-18-135
49
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 12/34 · Low
Exposure 5/34 · Minimal