What is the CVSS score of CVE-2026-3044?

CVE-2026-3044 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Ac8 Firmware are affected by CVE-2026-3044?

A high-severity vulnerability in Tenda AC8 routers (CVE-2026-3044) allows attackers to exploit file upload functionality, potentially enabling unauthorized access or control of affected devices.

How to fix or mitigate CVE-2026-3044?

Within 24 hours: Identify and inventory all Tenda AC8 devices running firmware version 16.03.34.06 or earlier; implement network segmentation to isolate affected devices from critical systems. Within 7 days: Apply network-based compensating controls (see below); document all identified devices and their current usage. Within 30 days: Replace affected Tenda AC8 units with alternative vendors, or contact Tenda for patched firmware availability; validate remediation across the environment.

Ac8 Firmware CVE-2026-3044

HIGH

Buffer Overflow (CWE-119)

2026-02-24 cna@vuldb.com

Buffer Overflow Stack Overflow Ac8 Firmware

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

CVE Published

Feb 24, 2026 - 00:16 nvd

HIGH 8.8

DescriptionCVE.org

A vulnerability has been found in Tenda AC8 16.03.34.06. This affects the function webCgiGetUploadFile of the file /cgi-bin/UploadCfg of the component Httpd Service. The manipulation of the argument boundary leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

AnalysisAI

Remote code execution in Tenda AC8 firmware versions up to 16.03.34.06 allows authenticated attackers to execute arbitrary code via a stack-based buffer overflow in the HTTP upload handler. Public exploit code exists for this vulnerability, which has no patch available. An attacker with valid credentials can trigger the overflow by manipulating the boundary parameter in multipart upload requests.

Technical ContextAI

Classified as CWE-119 (Buffer Overflow). Affects Ac8 Firmware. A vulnerability has been found in Tenda AC8 16.03.34.06. This affects the function webCgiGetUploadFile of the file /cgi-bin/UploadCfg of the component Httpd Service. The manipulation of the argument boundary leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

RemediationAI

Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible. Restrict network access to the affected service where possible.