CVE-2026-120241

high

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.

References

https://vuldb.com/vuln/429600/cti

https://vuldb.com/vuln/429600

https://vuldb.com/submit/1016041

https://vuldb.com/cve/CVE-2026-120241

https://github.com/byseeker/Ruijie-RG-ES-Series-Switches_PreAuth_Boundary_Overflow_DoS

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-114883

Details

Source: Mitre, NVD

Published: 2026-11-01

Updated: 2026-11-01

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High

CVSS v4

Base Score: 8.7

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Severity: High

EPSS

EPSS: 0.00619