Denial of Service Vulnerability in Tenda AC6 Router
CVE-2025-30256

8.6HIGH

Key Information:

Vendor

Tenda

Status
Vendor
CVE Published:
20 August 2025

What is CVE-2025-30256?

A denial of service vulnerability is present in the HTTP Header Parsing component of the Tenda AC6 router. When exploited, this flaw permits an adversary to disrupt the operation of the device through a series of specially constructed HTTP requests, which can lead to the router rebooting. Attackers can leverage this vulnerability by sending multiple crafted network packets, effectively causing an outage for users reliant on the affected device.

Affected Version(s)

AC6 V5.0 V02.03.01.110

References

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Discovered by Lilith >_> of Cisco Talos.
.