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CVE-2026-4737

Status: DeferredHigh (7.3)—

Use After Free vulnerability in No-Chicken Echo-Mate (‎SDK/rv1106-sdk/sysdrv/source/kernel/mm modules). This vulnerability is associated with program files rmap.C‎.

This issue affects Echo-Mate: before V250329.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

CWE-416 (Use After Free) en kernel con AV:L/PR:L permite escalada local. El acceso kernel habilitaría ejecución de código arbitrario (T1059) y potencial DoS (T1499.004).

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Execution PreventionThreat Intelligence ProgramRestrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationFilter Network Traffic

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

No-chicken — Echo-mateAI

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2026-4737",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-4737",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-24T14:35:39.935676Z"
        }
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "cve_disclosure@tech.gov.sg",
        "cvssData": {
          "Safety": "NEGLIGIBLE",
          "version": "4.0",
          "Recovery": "USER",
          "baseScore": 7.3,
          "Automatable": "NO",
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "valueDensity": "DIFFUSE",
          "vectorString": "CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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:N/AU:N/R:U/V:D/RE:L/U:Amber",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "providerUrgency": "AMBER",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "attackRequirements": "NONE",
          "privilegesRequired": "LOW",
          "subIntegrityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "HIGH",
          "vulnAvailabilityImpact": "HIGH",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "LOW",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "cve_disclosure@tech.gov.sg",
      "affectedData": [
        {
          "vendor": "No-Chicken",
          "modules": [
            "‎SDK/rv1106-sdk/sysdrv/source/kernel/mm"
          ],
          "product": "Echo-Mate",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "V250329",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "rmap.c‎"
          ],
          "collectionURL": "https://github.com/No-Chicken/Echo-Mate",
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-03-24T04:17:27.913",
  "references": [
    {
      "url": "https://github.com/No-Chicken/Echo-Mate/pull/9",
      "source": "cve_disclosure@tech.gov.sg"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cve_disclosure@tech.gov.sg",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use After Free vulnerability in No-Chicken Echo-Mate (‎SDK/rv1106-sdk/sysdrv/source/kernel/mm modules). This vulnerability is associated with program files rmap.C‎.\n\nThis issue affects Echo-Mate: before V250329."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de Uso Después de Liberar en No-Chicken Echo-Mate (SDK/rv1106-sdk/sysdrv/source/kernel/mm módulos). Esta vulnerabilidad está asociada con los archivos de programa rmap.C.\n\nEste problema afecta a Echo-Mate: antes de V250329."
    }
  ],
  "lastModified": "2026-06-17T10:57:08.920",
  "sourceIdentifier": "cve_disclosure@tech.gov.sg"
}