RCE in Ruijie Rg-Es205gc
CVE-2026-120242
A security flaw has been discovered in Ruijie RG-ES205GC, RG-ES206GC-P, RG-ES208GC, RG-ES210GC-LP and RG-ES210GS-P ESW_1.0(1)B1P48. The affected element is an unknown function of the file set_cloud_serverUrl.cgi of the component Cloud Management. The manipulation of the argument url results in cross site scripting. It is possible to launch 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.
Vulnerability class: XSS (Cross-Site Scripting)
Published .
CVSS v3 metric
CVSS v3 base score 2.4 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Ruijie Rg-Es205gc — versions ESW_1.0(1)B1P48
- Ruijie Rg-Es206gc-P — versions ESW_1.0(1)B1P48
- Ruijie Rg-Es208gc — versions ESW_1.0(1)B1P48
- Ruijie Rg-Es210gc-Lp — versions ESW_1.0(1)B1P48
- Ruijie Rg-Es210gs-P — versions ESW_1.0(1)B1P48
Weakness classification (CWE)
References
- github.com/byseeker/Ruijie-RG-ES-Series-Switches_XSS (exploit)
- vuldb.com/cve/CVE-2026-120242 (third-party-advisory)
- vuldb.com/submit/1016042 (third-party-advisory)
- vuldb.com/vuln/429601 (technical-description, vdb-entry)
- vuldb.com/vuln/429601/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-120242?
- CVE-2026-120242 is a low-severity vulnerability in Ruijie Rg-Es205gc, classified under Cross-site Scripting. CVSS score: 2.4/10. Published 2026-11-01.
- How severe is CVE-2026-120242?
- Low severity. CVSS v3 base score is 2.4 out of 10.