What is the CVSS score of CVE-2026-2138?

CVE-2026-2138 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 Tx9 Firmware are affected by CVE-2026-2138?

A high-severity vulnerability (CVSS 8.8) affecting Tenda TX9 routers up to version 22.03.02.10_multi allows attackers to exploit static routing configuration functions, potentially enabling…

Is there a public PoC exploit available for CVE-2026-2138?

Yes, a public proof-of-concept exploit is available for CVE-2026-2138. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-2138?

Within 24 hours: Identify and inventory all Tenda TX9 devices running affected firmware versions; isolate internet-facing units from critical systems if possible. Within 7 days: Implement network access controls restricting administrative access to TX9 devices; monitor for suspicious routing configuration changes and unauthorized access attempts. Within 30 days: Continuously monitor Tenda security advisories for patch availability; prepare emergency patching procedures; consider replacing devices if patches remain unavailable beyond 30 days.

Tx9 Firmware CVE-2026-2138

HIGH

Buffer Overflow (CWE-119)

2026-02-08 cna@vuldb.com

Buffer Overflow Tenda Tx9 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

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

PoC Detected

Feb 10, 2026 - 19:28 vuln.today

Public exploit code

CVE Published

Feb 08, 2026 - 06:16 nvd

HIGH 8.8

DescriptionCVE.org

A vulnerability was found in Tenda TX9 up to 22.03.02.10_multi. Affected is the function sub_42D03C of the file /goform/SetStaticRouteCfg. The manipulation of the argument list results in buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used.

AnalysisAI

Remote code execution in Tenda TX9 firmware versions up to 22.03.02.10_multi through a buffer overflow in the static route configuration function allows authenticated attackers to achieve full system compromise. Public exploit code exists for this vulnerability, significantly increasing the risk of active exploitation. No patch is currently available, making this a critical threat requiring immediate network segmentation or device replacement.

Technical ContextAI

Classified as CWE-119 (Buffer Overflow). Affects Tx9 Firmware. A vulnerability was found in Tenda TX9 up to 22.03.02.10_multi. Affected is the function sub_42D03C of the file /goform/SetStaticRouteCfg. The manipulation of the argument list results in buffer overflow. The attack can be launched remotely. The exploit has been made public and could 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.