CVE-2026-38834Public exploitNetwork attack vector

Unauthenticated command execution via hostname injection

Published Apr 21, 2026 · Updated Apr 21, 2026

Command injection in Tenda W30E V2.0 firmware 16.01.0.21 allows remote attackers to execute arbitrary commands via crafted HTTP requests. The do_ping_action function incorporates the hostName value into a ping command without neutralizing command separators, so newline-delimited commands reach the device shell. No prior privileges or user interaction are required; successful exploitation runs commands with the management service's privileges and can alter device files.

CVSS severity7.3
High
EPSS probability1.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Tenda W30E V2.0 firmware 16.01.0.21 allows remote attackers to execute arbitrary commands via crafted HTTP requests. The do_ping_action function incorporates the hostName value into a ping command without neutralizing command separators, so newline-delimited commands reach the device shell. No prior privileges or user interaction are required; successful exploitation runs commands with the management service's privileges and can alter device files.

The record

CVE
CVE-2026-38834
Published
Apr 21, 2026
Updated
Apr 21, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-77, CAPEC-248, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CAPEC-248Command Injection
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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