CVE-2026-120241

HIGH 7.5

Ruijie RG-ES205GC Local Firmware Upgrade httpupg.cgi buffer overflow

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-120 CWE-119
Vendor	ruijie
Product	rg-es205gc
Published	Nov 1, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Ruijie / RG-ES205GC

ESW_1.0(1)B1P48

Ruijie / RG-ES206GC-P

ESW_1.0(1)B1P48

Ruijie / RG-ES208GC

ESW_1.0(1)B1P48

Ruijie / RG-ES210GC-LP

ESW_1.0(1)B1P48

Ruijie / RG-ES210GS-P

ESW_1.0(1)B1P48

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/429600 vuldb.com: https://vuldb.com/vuln/429600/cti vuldb.com: https://vuldb.com/cve/CVE-2026-120241 vuldb.com: https://vuldb.com/submit/1016041 github.com: https://github.com/byseeker/Ruijie-RG-ES-Series-Switches_PreAuth_Boundary_Overflow_DoS

Credits

🔍 seeker (VulDB User) VulDB CNA Team