What is the CVSS score of CVE-2026-38834?

CVE-2026-38834 has a CVSS 3.1 base score of 7.3 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L. EPSS exploitation probability: 2.6%.

Which versions of Tenda W30E are affected by CVE-2026-38834?

Tenda W30E routers running firmware V16.01.0.21 are vulnerable to unauthenticated remote command execution through the diagnostic ping function, exposing organizations with these devices to complete…

How to fix or mitigate CVE-2026-38834?

Within 24 hours: Inventory all Tenda W30E devices across the network and firmware versions; isolate any running V16.01.0.21 from untrusted networks. Within 7 days: Restrict web interface access via network segmentation (ACLs/firewall rules), disable remote management if enabled, and apply any available firmware updates from Tenda. Within 30 days: Monitor Tenda security advisories for patch V16.01.0.22 or later; develop device replacement timeline if no patch is released.

Tenda W30E CVE-2026-38834

EUVD-2026-24162 HIGH

Command Injection (CWE-77)

2026-04-21 cve@mitre.org

GHSA-8p5x-j4cx-8cwg

Tenda Command Injection

7.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.3 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Re-analysis Queued

Apr 22, 2026 - 21:37 vuln.today

cvss_changed

Analysis Generated

Apr 21, 2026 - 20:26 vuln.today

CVSS changed

Apr 21, 2026 - 20:22 NVD

7.3 (None) 7.3 (HIGH)

EUVD ID Assigned

Apr 21, 2026 - 17:22 euvd

EUVD-2026-24162

Analysis Generated

Apr 21, 2026 - 17:22 vuln.today

CVE Published

Apr 21, 2026 - 17:16 nvd

HIGH 7.3

DescriptionCVE.org

Tenda W30E V2.0 V16.01.0.21 was found to contain a command injection vulnerability in the do_ping_action function via the hostName parameter. This vulnerability allows attackers to execute arbitrary commands via a crafted request.

AnalysisAI

Command injection in Tenda W30E router firmware V16.01.0.21 allows unauthenticated remote attackers to execute arbitrary system commands via the 'hostName' parameter in the diagnostic ping function. Attack requires only network access to the router's web interface with no authentication or user interaction. Proof-of-concept exploit code is publicly available (SSVC exploitation status: POC). EPSS data not available, but SSVC framework marks this as automatable with partial technical impact, making it suitable for mass scanning campaigns targeting exposed Tenda routers.

Technical ContextAI

The vulnerability resides in the do_ping_action function of the Tenda W30E router's web management interface, a common feature allowing administrators to perform network diagnostics. This is a classic command injection vulnerability (CWE-77) where user-supplied input in the 'hostName' parameter is passed unsanitized to an underlying system shell command, likely via functions like system() or popen() in the router's embedded Linux firmware. The diagnostic ping feature typically constructs commands like 'ping [user_input]', but without proper input validation or escaping, attackers can inject shell metacharacters (semicolons, pipes, backticks) to append arbitrary commands. Tenda W30E is a wireless router device typically deployed in home and small office environments, running proprietary firmware based on embedded Linux. The affected version V16.01.0.21 (firmware V2.0) processes HTTP requests to the web interface without requiring authentication for the vulnerable endpoint, as indicated by the CVSS vector PR:N.

RemediationAI

Check Tenda's official support website and product page for the W30E model for firmware updates newer than V16.01.0.21. No vendor-released patch version is independently confirmed from the available data at time of analysis. If no firmware update is available, implement the following compensating controls with noted trade-offs: (1) Disable remote management access to the router's web interface from the WAN side-configure the router to accept administrative connections only from the LAN, eliminating internet-based attack surface but preventing legitimate remote administration. (2) If remote access is required, place the router behind a firewall or VPN that restricts management interface access to trusted IP addresses only-adds complexity and may require additional network infrastructure. (3) Replace the Tenda W30E with alternative router hardware from vendors with stronger security track records if the device is end-of-life or unsupported. Monitor https://www.tenda.com.cn/en/download/ and the researcher's disclosure at https://github.com/jsjbcyber/repo/blob/main/rep_1.md for updates. Given the severity and public POC availability, replacement or strict network isolation should be prioritized over waiting for vendor patch if the device is internet-exposed.