CVEsRuijieCVE-2026-120241Published Nov 1, 18:45 · Updated Nov 1, 18:45 UTC
7.5
HighCVSS 3.1 · from VulDB
CVE-2026-120241

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

RG-ES205GC · Buffer overflow · CWE-120
AffectedRG-ES205GC, RG-ES206GC-P, RG-ES208GC and 2 more
FixNo fix listed yet.
PublishedNov 1, 18:45 · VulDB
ScoredNov 1 · 7.5 · VulDB
Exploit code publicNone known · checked 23:18 UTC
ExploitedNone known · CISA KEV checked 23:19 UTC

What we know

No known exploitation. CISA KEV, checked 23:19 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 23:18 UTC.
An attacker only needs network access to the target. No login needed. CVSS: network, no privileges.
A successful attack can take the service down. CVSS impact.

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.

From VulDB

Affected and fixed versions

ProductAffectedFixed inRG-ES205GCESW_1.0(1)B1P48–RG-ES206GC-PESW_1.0(1)B1P48–RG-ES208GCESW_1.0(1)B1P48–RG-ES210GC-LPESW_1.0(1)B1P48–RG-ES210GS-PESW_1.0(1)B1P48–

Exploit code

Exploit-DBnone knownMetasploitnone knownNucleinone known

References

VDB-429600 | Ruijie RG-ES205GC Local Firmware Upgrade httpupg.cgi buffer overflow · vuldb.comvdb entryVDB-429600 | CTI Indicators (IOB, IOC, IOA) · vuldb.comsignaturepermissions requiredCVE-2026-120241 | CVE Analysis and Report · vuldb.comthird party advisorySubmit #1016041 | Ruijie Networks Co., Ltd. RG-ES205GC, RG-ES206GC-P, RG-ES208GC, RG-ES210GC-LP, RG-ES210GS-P (sharing the same ESW firmware; NIS2100 series may also be aff ESW_1.0(1)B1P48, Release(12211919) Buffer Overflow · vuldb.comthird party advisorygithub.com/byseeker/Ruijie-RG-ES-Series-Switches_PreAuth_Boundary_Overflow_DoS · github.comexploit

Other CVEs in RG-ES205GC

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2.4Ruijie RG-ES205GC Cloud Management set_cloud_serverUrl.cgi cross site scripting · CVE-2026-120242Nov 1