Which versions of Tenda are affected by CVE-2026-4554?

Organizations using A security flaw should be aware of moderate risk from CVE-2026-4554, a command injection vulnerability rated CVSS 6.3.

Is there a public PoC exploit available for CVE-2026-4554?

Yes, a public proof-of-concept exploit is available for CVE-2026-4554. Prioritise patching immediately. EPSS: 2.7%.

How to fix or mitigate CVE-2026-4554?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Validate input sanitization for user-controlled parameters.

Tenda CVE-2026-4554

Q: What is the CVSS score of CVE-2026-4554?

CVE-2026-4554 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 2.7%.

EUVD-2026-14327 LOW

Command Injection (CWE-77)

2026-03-22 VulDB

GHSA-gh64-hffv-c24x

Tenda Command Injection

2.1

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

2.1 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

5.3 (MEDIUM) 2.1 (LOW)

PoC Detected

Apr 03, 2026 - 11:32 vuln.today

Public exploit code

EUVD ID Assigned

Mar 22, 2026 - 17:00 euvd

EUVD-2026-14327

Analysis Generated

Mar 22, 2026 - 17:00 vuln.today

CVE Published

Mar 22, 2026 - 16:51 nvd

MEDIUM 5.3

DescriptionCVE.org

A security flaw has been discovered in Tenda F453 1.0.0.3. The affected element is the function FormWriteFacMac of the file /goform/WriteFacMac. The manipulation of the argument mac results in command injection. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.

AnalysisAI

Unauthenticated attackers can execute arbitrary commands on Tenda F453 routers (version 1.0.0.3) by injecting malicious input through the mac parameter in the /goform/WriteFacMac endpoint. Public exploit code exists for this vulnerability, enabling remote code execution with minimal attack complexity. A patch is not currently available.

Technical ContextAI

The vulnerability resides in the web management interface of Tenda F453 routers, specifically in the FormWriteFacMac function that handles MAC address configuration. The affected CPE is cpe:2.3:a:tenda:f453:*:*:*:*:*:*:*:*, indicating all versions of the F453 firmware are in scope. The root cause is classified under CWE-77 (Improper Neutralization of Special Elements used in a Command), which occurs when user-supplied input (the 'mac' parameter) is passed directly to system command execution functions without proper sanitization. This allows attackers to inject shell metacharacters (e.g., semicolons, pipes, backticks) to break out of the intended command context and execute arbitrary shell commands on the underlying Linux-based router OS.

RemediationAI

Check Tenda's official security advisory and firmware repository at https://www.tenda.com.cn/ for available firmware updates beyond version 1.0.0.3; if a patched version is available, update the router immediately via the web interface (Administration > System Tools > Firmware Upgrade). If no patch is available from the vendor, implement network-level mitigations: restrict access to the router's web management interface to trusted IP addresses only via firewall rules, disable remote management (WAN access to the router's administrative interface), change default credentials to strong passwords, and consider isolating the F453 on a dedicated network segment if operating in an enterprise environment. Monitor the router's system logs for suspicious activity and contact Tenda support directly to request a security update timeline.