CVE-2026-120241 Details
Description
A vulnerability was identified in Ruijie RG-ES205GC, RG-ES206GC-P, RG-ES208GC, RG-ES210GC-LP and RG-ES210GS-P ESW_1.0(1)B1P48. Impacted is an unknown function of the file httpupg.cgi of the component Local Firmware Upgrade Interface. The manipulation leads to buffer overflow. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
A buffer overflow vulnerability has been identified in Ruijie RG-ES205GC, RG-ES206GC-P, RG-ES208GC, RG-ES210GC-LP, and RG-ES210GS-P switches running ESW_1.0(1)B1P48. The vulnerability resides in an unknown function of the file httpupg.cgi, which is part of the Local Firmware Upgrade Interface. This buffer overflow can be exploited remotely, and the public availability of the exploit suggests that it might be actively used.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 1, 2026CISA-ADP
Assessed Nov 5, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/byseeker/Ruijie-RG-ES-Series-Switches_PreAuth_Boundary_Overflow_DoS | [email protected] | Exploit |
| https://vuldb.com/cve/CVE-2026-120241 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/1016041 | [email protected] | Permission Required |
| https://vuldb.com/vuln/429600 | [email protected] | Permission Required |
| https://vuldb.com/vuln/429600/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-120 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Ruijie RG-ES205GC | ESW_1.0(1)B1P48 |
CPE
Remediation
| |
| Ruijie RG-ES206GC-P | ESW_1.0(1)B1P48 |
CPE
Remediation
| |
| Ruijie RG-ES208GC | ESW_1.0(1)B1P48 |
CPE
Remediation
| |
| Ruijie RG-ES210GC-LP | ESW_1.0(1)B1P48 |
CPE
Remediation
| |
| Ruijie RG-ES210GS-P | ESW_1.0(1)B1P48 |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 5, 2026 | CVE Modified | CISA-ADP |
| Nov 1, 2026 | New CVE Received | [email protected] |