Remote Code Execution Flaw in Grandstream HT800 Series IP Phones
CVE-2020-5761

7.5HIGH

Key Information:

Vendor

Grandstream

Status
Grandstream Ht800 Series
Vendor
CVE Published:
29 July 2020

What is CVE-2020-5761?

The Grandstream HT800 series IP phones running firmware version 1.0.17.5 and earlier are susceptible to a denial of service vulnerability due to a flaw in the TR-069 service. This vulnerability allows unauthenticated remote attackers to exploit the device by sending a small, malicious TCP message, which triggers an infinite loop. This CPU exhaustion can render the device unresponsive, leading to service disruptions and potential risks in deployed environments.

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Affected Version(s)

Grandstream HT800 Series Versions 1.0.17.5 and below

References

https://www.tenable.com/security/research/tra-2020-43
x_refsource_MISC
https://www.tenable.com/security/research/tra-2020-47
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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