CVE-2026-12197Public exploitNetwork attack vector

Authenticated command execution via unquoted nslookup target

Published Jun 14, 2026 · Updated Jun 15, 2026

OS command injection in Ruijie Networks RG-EG105G-P 2.340 allows remote authenticated users to execute shell commands via the diagnose API. The nslookup method in /cgi-bin/luci/api/diagnose inserts params.target into an unquoted nslookup shell command, so a newline starts an additional command. Administrator authentication and management-interface reachability are required; commands run as the EWEB/LuCI backend process, whose OS privilege level is unverified.

CVSS severity7.2
High
EPSS probability2.38%
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 Ruijie Networks RG-EG105G-P 2.340 allows remote authenticated users to execute shell commands via the diagnose API. The nslookup method in /cgi-bin/luci/api/diagnose inserts params.target into an unquoted nslookup shell command, so a newline starts an additional command. Administrator authentication and management-interface reachability are required; commands run as the EWEB/LuCI backend process, whose OS privilege level is unverified.

The record

CVE
CVE-2026-12197
Published
Jun 14, 2026
Updated
Jun 15, 2026
Vendor
Ruijie Networks
Product
RG-EG105G-P
Classifications
CWE-77, CWE-74, T1059.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 15, 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=2.340

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Ruijie Networks · RG-EG105G-Pversion=2.340

Published CVSS scores

7.3VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
8.3VulDB CNAAV:N/AC:L/Au:M/C:C/I:C/A:C
7.2VulDB CNACVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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