Vulnerability-Lookup

CNVD-2026-06823

Vulnerability from cnvd - Published: 2026-01-23

Title

D-Link DIR-823G命令注入漏洞

Description

D-Link DIR-823G是一款家用双频千兆无线路由器，采用第二代802.11ac（Wi-Fi5）技术，专为中高速宽带网络设计。 D-Link DIR-823G存在命令注入漏洞，该漏洞源于timelycheck和sysconf二进制文件处理/var/system/linux_vlan_reinit文件时未能正确过滤构造命令特殊字符、命令等。目前没有详细的漏洞细节提供。

Severity

中

Formal description

目前厂商尚未发布升级程序修复该安全问题，详情见厂商官网： https://www.dlink.com/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2025-60671

Impacted products

Name
D-Link DIR-823G DIR823G_V1.0.2B05_20181207.bin

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2025-60671",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-60671"
    }
  },
  "description": "D-Link DIR-823G\u662f\u4e00\u6b3e\u5bb6\u7528\u53cc\u9891\u5343\u5146\u65e0\u7ebf\u8def\u7531\u5668\uff0c\u91c7\u7528\u7b2c\u4e8c\u4ee3802.11ac\uff08Wi-Fi5\uff09\u6280\u672f\uff0c\u4e13\u4e3a\u4e2d\u9ad8\u901f\u5bbd\u5e26\u7f51\u7edc\u8bbe\u8ba1\u3002\n\nD-Link DIR-823G\u5b58\u5728\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8etimelycheck\u548csysconf\u4e8c\u8fdb\u5236\u6587\u4ef6\u5904\u7406/var/system/linux_vlan_reinit\u6587\u4ef6\u65f6\u672a\u80fd\u6b63\u786e\u8fc7\u6ee4\u6784\u9020\u547d\u4ee4\u7279\u6b8a\u5b57\u7b26\u3001\u547d\u4ee4\u7b49\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5c1a\u672a\u53d1\u5e03\u5347\u7ea7\u7a0b\u5e8f\u4fee\u590d\u8be5\u5b89\u5168\u95ee\u9898\uff0c\u8be6\u60c5\u89c1\u5382\u5546\u5b98\u7f51\uff1a\r\nhttps://www.dlink.com/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-06823",
  "openTime": "2026-01-23",
  "products": {
    "product": "D-Link DIR-823G DIR823G_V1.0.2B05_20181207.bin"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2025-60671",
  "serverity": "\u4e2d",
  "submitTime": "2025-11-18",
  "title": "D-Link DIR-823G\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e"
}

CVE-2025-60671 (GCVE-0-2025-60671)

Vulnerability from cvelistv5 – Published: 2025-11-13 00:00 – Updated: 2026-07-05 01:18

Summary

A command injection vulnerability exists in the D-Link DIR-823G router firmware DIR823G_V1.0.2B05_20181207.bin in the timelycheck and sysconf binaries, which process the /var/system/linux_vlan_reinit file. The vulnerability occurs because content read from this file is only partially validated for a prefix and then formatted using vsnprintf() before being executed with system(), allowing an attacker with write access to /var/system/linux_vlan_reinit to execute arbitrary commands on the device.

Severity

5.4 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-11-14 18:08 UTC

CWE

n/a
CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')

Assigner

mitre mitre root Scorecard

References

3 references

URL	Tags
https://www.dlink.com/en/security-bulletin/
https://www.dlink.com/en
https://github.com/yifan20020708/SGTaint-0-day/bl…

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 5.4,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-60671",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-11-14T18:08:48.288363Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-77",
                "description": "CWE-77 Improper Neutralization of Special Elements used in a Command (\u0027Command Injection\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-11-14T18:08:51.160Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A command injection vulnerability exists in the D-Link DIR-823G router firmware DIR823G_V1.0.2B05_20181207.bin in the timelycheck and sysconf binaries, which process the /var/system/linux_vlan_reinit file. The vulnerability occurs because content read from this file is only partially validated for a prefix and then formatted using vsnprintf() before being executed with system(), allowing an attacker with write access to /var/system/linux_vlan_reinit to execute arbitrary commands on the device."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-05T01:18:40.592Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://www.dlink.com/en/security-bulletin/"
        },
        {
          "url": "https://www.dlink.com/en"
        },
        {
          "url": "https://github.com/yifan20020708/SGTaint-0-day/blob/main/DLink/DLink-DIR-823G/CVE-2025-60671.md"
        }
      ]
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  "cveMetadata": {
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    "assignerShortName": "mitre",
    "cveId": "CVE-2025-60671",
    "datePublished": "2025-11-13T00:00:00.000Z",
    "dateReserved": "2025-09-26T00:00:00.000Z",
    "dateUpdated": "2026-07-05T01:18:40.592Z",
    "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.

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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CNVD-2026-06823

CVE-2025-60671 (GCVE-0-2025-60671)

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