SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2025-30256

A denial of service vulnerability exists in the HTTP Header Parsing functionality of Tenda AC6 V5.0 V02.03.01.110.

HIGH 7.5EPSS 0.39%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A denial of service vulnerability exists in the HTTP Header Parsing functionality of Tenda AC6 V5.0 V02.03.01.110. A specially crafted series of HTTP requests can lead to a reboot. An attacker can send multiple network packets to trigger this vulnerability.

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
0.39% probability · 33th percentile
CISA KEV
Not listed
Weakness
CWE-772
Affected
tenda/ac6 firmware
Source
talos-cna@cisco.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.