CVE-2026-86167Public exploitNetwork attack vector

Authenticated command execution via unsanitized GPON identifier

Published Sep 6, 2026 · Updated Sep 8, 2026

OS command injection in Tenda HG10 300001138 allows remote authenticated users to execute arbitrary commands through a crafted GPON request. The Boa formgponConf handler places the user-controlled fmgpon_loid value into a firmware command string without validation, escaping, or filtering before execution. Low-privileged web access is sufficient, and injected shell metacharacters execute commands with the device process privileges.

CVSS severityUnavailable
Unscored
EPSS probability1.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Tenda HG10 300001138 allows remote authenticated users to execute arbitrary commands through a crafted GPON request. The Boa formgponConf handler places the user-controlled fmgpon_loid value into a firmware command string without validation, escaping, or filtering before execution. Low-privileged web access is sufficient, and injected shell metacharacters execute commands with the device process privileges.

The record

CVE
CVE-2026-86167
Published
Sep 6, 2026
Updated
Sep 8, 2026
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
HG10
Classifications
CWE-77, CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 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=300001138

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · HG10version=300001138

Published CVSS scores

9.9VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
9.9VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
9.4VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Command and Scripting Interpreter: Unix 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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