High severity · published Aug 20, 2025
CVE-2025-30256
A denial of service vulnerability exists in the HTTP Header Parsing functionality of Tenda AC6 V5.0 V02.03.01.110
7.5
CVSS
0.4%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AV
AC6 V5.0 · Tenda
V02.03.01.110 · source: vendor
AF
Ac6 Firmware · Tenda
02.03.01.110 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-30256
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-30256
Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2025-2166
www.talosintelligence.com
https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2166
More from AC6 V5.0
9.8
CVE-2025-31355
A firmware update vulnerability exists in the Firmware Signature Validation functionality of Tenda AC6 V5.0 V02.03.01.110
9.8
CVE-2025-24322
An unsafe default authentication vulnerability exists in the Initial Setup Authentication functionality of Tenda AC6 V5.0 V02.03.01.110
9.8
CVE-2025-27129
An authentication bypass vulnerability exists in the HTTP authentication functionality of Tenda AC6 V5.0 V02.03.01.110
9.8
CVE-2025-32010
A stack-based buffer overflow vulnerability exists in the Cloud API functionality of Tenda AC6 V5.0 V02.03.01.110
7.5
CVE-2025-24496
An information disclosure vulnerability exists in the /goform/getproductInfo functionality of Tenda AC6 V5.0 V02.03.01.110