Vulnerability-Lookup

CNVD-2026-16831

Vulnerability from cnvd - Published: 2026-04-10

Title

NanoMQ缓冲区溢出漏洞（CNVD-2026-16831）

Description

NanoMQ是一款用于物联网边缘平台的轻量级快速MQTT Broker。 NanoMQ 0.24.8之前版本存在缓冲区溢出漏洞。该漏洞源于MQTT-over-WebSocket传输在处理具有故意大Remaining Length值的MQTT数据包时，未能正确验证接收缓冲区大小，攻击者可利用该漏洞导致越界读取和崩溃。

Severity

高

Patch Name

NanoMQ缓冲区溢出漏洞（CNVD-2026-16831）的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/nanomq/nanomq/releases

Reference

https://github.com/nanomq/NanoNNG/pull/1405

Impacted products

Name
NanoMQ NanoMQ <0.24.8

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-25627",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-25627"
    }
  },
  "description": "NanoMQ\u662f\u4e00\u6b3e\u7528\u4e8e\u7269\u8054\u7f51\u8fb9\u7f18\u5e73\u53f0\u7684\u8f7b\u91cf\u7ea7\u5feb\u901fMQTT Broker\u3002\n\nNanoMQ 0.24.8\u4e4b\u524d\u7248\u672c\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8eMQTT-over-WebSocket\u4f20\u8f93\u5728\u5904\u7406\u5177\u6709\u6545\u610f\u5927Remaining Length\u503c\u7684MQTT\u6570\u636e\u5305\u65f6\uff0c\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1\u63a5\u6536\u7f13\u51b2\u533a\u5927\u5c0f\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u8d8a\u754c\u8bfb\u53d6\u548c\u5d29\u6e83\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/nanomq/nanomq/releases",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-16831",
  "openTime": "2026-04-10",
  "patchDescription": "NanoMQ\u662f\u4e00\u6b3e\u7528\u4e8e\u7269\u8054\u7f51\u8fb9\u7f18\u5e73\u53f0\u7684\u8f7b\u91cf\u7ea7\u5feb\u901fMQTT Broker\u3002\r\n\r\nNanoMQ 0.24.8\u4e4b\u524d\u7248\u672c\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8eMQTT-over-WebSocket\u4f20\u8f93\u5728\u5904\u7406\u5177\u6709\u6545\u610f\u5927Remaining Length\u503c\u7684MQTT\u6570\u636e\u5305\u65f6\uff0c\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1\u63a5\u6536\u7f13\u51b2\u533a\u5927\u5c0f\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u8d8a\u754c\u8bfb\u53d6\u548c\u5d29\u6e83\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "NanoMQ\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2026-16831\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "NanoMQ NanoMQ \u003c0.24.8"
  },
  "referenceLink": "https://github.com/nanomq/NanoNNG/pull/1405",
  "serverity": "\u9ad8",
  "submitTime": "2026-04-10",
  "title": "NanoMQ\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2026-16831\uff09"
}

CVE-2026-25627 (GCVE-0-2026-25627)

Vulnerability from cvelistv5 – Published: 2026-03-30 20:11 – Updated: 2026-03-31 19:09

Title

nanomq: OOB Read / Crash (DoS) via Malformed MQTT Remaining Length over WebSocket

Summary

NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Prior to version 0.24.8, NanoMQ’s MQTT-over-WebSocket transport can be crashed by sending an MQTT packet with a deliberately large Remaining Length in the fixed header while providing a much shorter actual payload. The code path copies Remaining Length bytes without verifying that the current receive buffer contains that many bytes, resulting in an out-of-bounds read (ASAN reports OOB / crash). This is remotely triggerable over the WebSocket listener. This issue has been patched in version 0.24.8.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-31 18:38 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7712 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/nanomq/nanomq/security/advisor…	x_refsource_CONFIRM
https://github.com/nanomq/NanoNNG/pull/1405	x_refsource_MISC
https://github.com/nanomq/NanoNNG/commit/e80b30ba…	x_refsource_MISC
https://github.com/nanomq/nanomq/releases/tag/0.24.8	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
nanomq	nanomq	Affected: < 0.24.8

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-25627",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-31T18:38:44.968276Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-31T19:09:34.784Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/nanomq/nanomq/security/advisories/GHSA-w4rh-v3h2-j29x"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "nanomq",
          "vendor": "nanomq",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.24.8"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Prior to version 0.24.8, NanoMQ\u2019s MQTT-over-WebSocket transport can be crashed by sending an MQTT packet with a deliberately large Remaining Length in the fixed header while providing a much shorter actual payload. The code path copies Remaining Length bytes without verifying that the current receive buffer contains that many bytes, resulting in an out-of-bounds read (ASAN reports OOB / crash). This is remotely triggerable over the WebSocket listener. This issue has been patched in version 0.24.8."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-125",
              "description": "CWE-125: Out-of-bounds Read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-30T20:11:08.586Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/nanomq/nanomq/security/advisories/GHSA-w4rh-v3h2-j29x",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/nanomq/nanomq/security/advisories/GHSA-w4rh-v3h2-j29x"
        },
        {
          "name": "https://github.com/nanomq/NanoNNG/pull/1405",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nanomq/NanoNNG/pull/1405"
        },
        {
          "name": "https://github.com/nanomq/NanoNNG/commit/e80b30bad6d855593a68d18f2785bfaca6faf09e",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nanomq/NanoNNG/commit/e80b30bad6d855593a68d18f2785bfaca6faf09e"
        },
        {
          "name": "https://github.com/nanomq/nanomq/releases/tag/0.24.8",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nanomq/nanomq/releases/tag/0.24.8"
        }
      ],
      "source": {
        "advisory": "GHSA-w4rh-v3h2-j29x",
        "discovery": "UNKNOWN"
      },
      "title": "nanomq: OOB Read / Crash (DoS) via Malformed MQTT Remaining Length over WebSocket"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-25627",
    "datePublished": "2026-03-30T20:11:08.586Z",
    "dateReserved": "2026-02-04T05:15:41.789Z",
    "dateUpdated": "2026-03-31T19:09:34.784Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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