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CVE-2026-120241

CVE-2026-120241

waiting for further signalsZero needs more public information before it can validate it.

EUVD-2026-114883 ↗

no check availablenot proven exploitable
cve.orgpublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).−26dkevAttacks confirmed in the real world.
Ruijie RG-ES205GC ESW_1.0(1)B1P48
CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
ETK-2026-3243Zero's internal tracking ID, independent of the CVE number., permanent identifier
cvss8.7cna vendorCVSS: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
2h 14msince last run
17mAI analysisAnalysis: how long the AI spent reversing this signal.
timeline
0 = trigger signal
public poc−26dtrigger signal (cve.org) +0dwaiting for further signals+0.0d
−20d
−15d
−10d
−5d

description

Ruijie RG-ES205GC, RG-ES206GC-P, RG-ES208GC, RG-ES210GC-LP, and RG-ES210GS-P devices running the reported ESW_1.0(1)B1P48 firmware are affected by a buffer overflow in the local firmware-upgrade interface. A remote attacker may be able to trigger the flaw; the available evidence does not state whether authentication is required.

mitigation

Restrict network access to the local firmware-upgrade interface to trusted administrative hosts and isolate affected switches from untrusted networks. Monitor Ruijie support channels for a corrected firmware release; no fixed version is recorded.

check
no
exploit
no
automationDeterministic: a check that runs on its own, the same request on every target. Contextual: an agentic technique that needs to be applied per target, for bugs that depend on contextual flows.
contextual
auth requiredWhether an attacker needs an account first, based on the CVSS vector's Privileges Required.
no
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
–
agent run time
17m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-11-01 18:45Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
−26d
Δ to kevAttacks confirmed in the real world.
–

outcome

Contextual, not validated: no deterministic check could cover this one, and no technique passed our review.

source signals

Public signals that triggered or updated the pipeline. These are inputs for the deltas above.

  1. 2026-11-01 18:45Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-120241
  2. 2026-11-01 19:13Z
    byseeker/Ruijie-RG-ES-Series-Switches_PreAuth_Boundary_Overflow_DoS
    github · https://github.com/byseeker/Ruijie-RG-ES-Series-Switches_PreAuth_Boundary_Overflow_DoS

this entry in the feed

GET /api/v1/feed/CVE-2026-120241

{
  "etk_id": "ETK-2026-3243",
  "cve_id": "CVE-2026-120241",
  "display_id": "CVE-2026-120241",
  "ghsa_id": null,
  "euvd_id": "EUVD-2026-114883",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Buffer overflow in Ruijie switch firmware-upgrade interface",
  "summary": "Ruijie RG-ES205GC, RG-ES206GC-P, RG-ES208GC, RG-ES210GC-LP, and RG-ES210GS-P devices running the reported ESW_1.0(1)B1P48 firmware are affected by a buffer overflow in the local firmware-upgrade interface. A remote attacker may be able to trigger the flaw; the available evidence does not state whether authentication is required.",
  "mitigation": "Restrict network access to the local firmware-upgrade interface to trusted administrative hosts and isolate affected switches from untrusted networks. Monitor Ruijie support channels for a corrected firmware release; no fixed version is recorded.",
  "vendor": "Ruijie",
  "product": "RG-ES205GC",
  "affected": [
    {
      "affected_notes": [
        "ESW_1.0(1)B1P48"
      ],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "RG-ES205GC",
      "purl": null
    },
    {
      "affected_notes": [
        "ESW_1.0(1)B1P48"
      ],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "RG-ES206GC-P",
      "purl": null
    },
    {
      "affected_notes": [
        "ESW_1.0(1)B1P48"
      ],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "RG-ES208GC",
      "purl": null
    },
    {
      "affected_notes": [
        "ESW_1.0(1)B1P48"
      ],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "RG-ES210GC-LP",
      "purl": null
    },
    {
      "affected_notes": [
        "ESW_1.0(1)B1P48"
      ],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "RG-ES210GS-P",
      "purl": null
    }
  ],
  "cwes": [
    120
  ],
  "cvss_score": 8.7,
  "cvss_src": "cna_vendor",
  "cvss_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",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 16.56020525,
  "t0_at": "2026-11-01T18:45:15.676000+00:00",
  "signals": {
    "public_poc": {
      "at": "2026-10-06T13:30:15+00:00",
      "days": -26.218757824074075,
      "is_lower_bound": false,
      "measured_at": "2026-11-01T18:45:15.676000+00:00",
      "url": "https://github.com/byseeker/Ruijie-RG-ES-Series-Switches_PreAuth_Boundary_Overflow_DoS"
    },
    "trigger_signal": {
      "at": "2026-11-01T18:45:15.676000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-01T18:45:15.676000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-120241"
    }
  }
}

published 2026-11-01 19:10Z
last change 2026-11-01 21:27Z

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