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No exploitation reportedAwaiting NVD analysis

CVE-2026-120241

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

No exploitation reported by the sources we read.

  • Published2026-11-01
  • WeaknessCWE-119 · CWE-120

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-11-0118:45CVE publishedCNA

Observed activity

isMalicious corpus · updated 2026-11-01 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-120241?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-120241?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

Products declared by the CNA

As VulDB, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • Ruijie RG-ES205GC
    Affected
    • = ESW_1.0(1)B1P48no fix stated
  • Ruijie RG-ES206GC-P
    Affected
    • = ESW_1.0(1)B1P48no fix stated
  • Ruijie RG-ES208GC
    Affected
    • = ESW_1.0(1)B1P48no fix stated
  • Ruijie RG-ES210GC-LP
    Affected
    • = ESW_1.0(1)B1P48no fix stated
  • Ruijie RG-ES210GS-P
    Affected
    • = ESW_1.0(1)B1P48no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-01

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-120241 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 4.08.72026-11-01
  • CNACVSS 3.17.52026-11-01
  • NVDCVSS 3.17.5read 2026-11-01
  • CNACVSS 3.07.52026-11-01
  • CNACVSS 2.07.82026-11-01
  • CNAweakness (CWE)CWE-119, CWE-1202026-11-01
  • NVDweakness (CWE)CWE-119, CWE-120read 2026-11-01

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 4.0 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/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
2026-11-01
Last Modified
2026-11-01
NVD status
Received

Frequently asked questions

What is CVE-2026-120241?

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.

Is CVE-2026-120241 actively exploited?

Active exploitation of CVE-2026-120241 has not been confirmed.

What is the CVSS score for CVE-2026-120241?

CVE-2026-120241 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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