PatchSiren cyber security CVE debrief
CVE-2026-12197 Ruijie CVE debrief
A security flaw has been discovered in Ruijie EG105G-P 2.340. The impacted element is the function nslookup of the file /cgi-bin/luci/api/diagnose of the component JSON-RPC Diagnose Endpoint. Performing a manipulation of the argument params.target results in command injection. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
- Vendor
- Ruijie
- Product
- EG105G-P
- CVSS
- HIGH 7.3
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-06-15
- Original CVE updated
- 2026-06-15
- Advisory published
- 2026-06-15
- Advisory updated
- 2026-06-15
Who should care
Administrators and users of Ruijie EG105G-P 2.340 are advised to apply patches or mitigations to prevent exploitation of this vulnerability.
Technical summary
The vulnerability exists in the nslookup function of the /cgi-bin/luci/api/diagnose file in the JSON-RPC Diagnose Endpoint of Ruijie EG105G-P 2.340. An attacker can inject commands by manipulating the params.target argument. This can be done remotely, and a public exploit is available.
Defensive priority
HIGH
Recommended defensive actions
- Apply patches or updates provided by the vendor to fix the command injection vulnerability in the nslookup function of Ruijie EG105G-P 2.340.
- Implement network access controls to limit access to the JSON-RPC Diagnose Endpoint.
- Monitor for suspicious activity and signs of exploitation.
Evidence notes
The CVE-2026-12197 vulnerability has a CVSS score of 7.3 and is classified as HIGH severity. The vulnerability is caused by improper neutralization of special elements used in an OS command (CWE-74) and command injection (CWE-77).
Official resources
CVE-2026-12197 was published on 2026-06-15T00:16:43.603Z and has not been modified since then.