CVE-2026-5338Public exploitNetwork attack vector

Authenticated command execution via unsanitized lanIp

Published Apr 2, 2026 · Updated Apr 2, 2026

Command injection in Tenda G103 1.0.0.5 allows remote authenticated users to execute arbitrary commands through the lanIp setting. system.lua's action_set_system_settings function passes lanIp directly to ifconfig, fw_setenv, and uci shell commands without sanitizing metacharacters. A valid high-privilege web session is required, and successful injection executes commands as root, enabling complete device takeover.

CVSS severity7.2
High
EPSS probability4.78%
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 G103 1.0.0.5 allows remote authenticated users to execute arbitrary commands through the lanIp setting. system.lua's action_set_system_settings function passes lanIp directly to ifconfig, fw_setenv, and uci shell commands without sanitizing metacharacters. A valid high-privilege web session is required, and successful injection executes commands as root, enabling complete device takeover.

The record

CVE
CVE-2026-5338
Published
Apr 2, 2026
Updated
Apr 2, 2026
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
G103
Classifications
CWE-74, CWE-77, T1059.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Shenzhen Tenda Technology Co., Ltd. · G103version=1.0.0.5

Published CVSS scores

4.7VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
5.8VulDBAV:N/AC:L/Au:M/C:P/I:P/A:P
2.0VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059.004Unix Shell

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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