Vulnerability-Lookup

CNVD-2021-85890

Vulnerability from cnvd - Published: 2021-11-10

Title

D-Link DIR-823G拒绝服务漏洞（CNVD-2021-85890）

Description

D-Link DIR-823G是一款AC1200M双频千兆无线路由器。 D-Link DIR-823G 1.02B05版中的/cgi-bin/upload_firmware.cgi组件存在拒绝服务漏洞。攻击者可利用该漏洞导致拒绝服务。

Severity

高

Formal description

厂商尚未提供漏洞修复方案，请关注厂商主页更新： https://www.dlink.com/en/security-bulletin

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-25366

Impacted products

Name
D-Link DIR-823G 1.02B05

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-25366",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-25366"
    }
  },
  "description": "D-Link DIR-823G\u662f\u4e00\u6b3eAC1200M\u53cc\u9891\u5343\u5146\u65e0\u7ebf\u8def\u7531\u5668\u3002\n\nD-Link DIR-823G 1.02B05\u7248\u4e2d\u7684/cgi-bin/upload_firmware.cgi\u7ec4\u4ef6\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u6f0f\u6d1e\u4fee\u590d\u65b9\u6848\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u66f4\u65b0\uff1a\r\nhttps://www.dlink.com/en/security-bulletin",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-85890",
  "openTime": "2021-11-10",
  "products": {
    "product": "D-Link DIR-823G 1.02B05"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-25366",
  "serverity": "\u9ad8",
  "submitTime": "2021-11-05",
  "title": "D-Link DIR-823G\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-85890\uff09"
}

CVE-2020-25366 (GCVE-0-2020-25366)

Vulnerability from cvelistv5 – Published: 2021-11-04 10:12 – Updated: 2026-07-09 00:11

Summary

An issue in the component /cgi-bin/upload_firmware.cgi of D-Link DIR-823G REVA1 1.02B05 allows attackers to cause a denial of service (DoS) via unspecified vectors.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

2 references

URL	Tags
https://www.dlink.com/en/security-bulletin/
https://github.com/sek1th/iot/blob/master/dir823g…

Show details on NVD website

JSON

To clipboard

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          },
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            "url": "https://github.com/sek1th/iot/blob/master/dir823g_upfw_dos.md"
          }
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                            "version_value": "n/a"
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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.

Detection rules are retrieved from Rulezet.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.