Vulnerability-Lookup

CNVD-2025-24474

Vulnerability from cnvd - Published: 2025-10-21

Title

Tenda AC20 sscanf函数缓冲区溢出漏洞

Description

Tenda AC20是一款由腾达（Tenda）推出的家庭路由器。 Tenda AC20存在缓冲区溢出漏洞，，该漏洞源于文件/goform/fast_setting_wifi_set中sscanf函数参数timeZone的错误操作，目前没有详细的漏洞细节提供。

Severity

高

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.tenda.com.cn/

Reference

https://github.com/cymiao1978/cve/blob/main/11.md

Impacted products

Name
Tenda AC20 <=16.03.08.12

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2025-11385",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-11385"
    }
  },
  "description": "Tenda AC20\u662f\u4e00\u6b3e\u7531\u817e\u8fbe\uff08Tenda\uff09\u63a8\u51fa\u7684\u5bb6\u5ead\u8def\u7531\u5668\u3002\n\nTenda AC20\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u6587\u4ef6/goform/fast_setting_wifi_set\u4e2dsscanf\u51fd\u6570\u53c2\u6570timeZone\u7684\u9519\u8bef\u64cd\u4f5c\uff0c\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.tenda.com.cn/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2025-24474",
  "openTime": "2025-10-21",
  "products": {
    "product": "Tenda AC20 \u003c=16.03.08.12"
  },
  "referenceLink": "https://github.com/cymiao1978/cve/blob/main/11.md",
  "serverity": "\u9ad8",
  "submitTime": "2025-10-13",
  "title": "Tenda AC20 sscanf\u51fd\u6570\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2025-11385 (GCVE-0-2025-11385)

Vulnerability from cvelistv5 – Published: 2025-10-07 09:32 – Updated: 2026-02-24 06:47

Title

Tenda AC20 fast_setting_wifi_set sscanf buffer overflow

Summary

A vulnerability has been found in Tenda AC20 up to 16.03.08.12. The affected element is the function sscanf of the file /goform/fast_setting_wifi_set. The manipulation of the argument timeZone leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

8.8 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-07 18:23 UTC

CWE

CWE-120 - Buffer Overflow
CWE-119 - Memory Corruption

Assigner

VulDB mitre root

References

6 references

URL	Tags
https://vuldb.com/?id.327312	vdb-entrytechnical-description
https://vuldb.com/?ctiid.327312	signaturepermissions-required
https://vuldb.com/?submit.664922	third-party-advisory
https://github.com/cymiao1978/cve/blob/main/11.md	related
https://github.com/cymiao1978/cve/blob/main/11.md#poc	exploit
https://www.tenda.com.cn/	product

Impacted products

1 product

Vendor	Product	Version
Tenda	AC20	Affected: 16.03.08.0 Affected: 16.03.08.1 Affected: 16.03.08.2 Affected: 16.03.08.3 Affected: 16.03.08.4 Affected: 16.03.08.5 Affected: 16.03.08.6 Affected: 16.03.08.7 Affected: 16.03.08.8 Affected: 16.03.08.9 Affected: 16.03.08.10 Affected: 16.03.08.11 Affected: 16.03.08.12 cpe:2.3:o:tenda:ac20_firmware::::::::

Credits

cymiao (VulDB User)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-11385",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-07T18:23:22.789479Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        "providerMetadata": {
          "dateUpdated": "2025-10-07T18:23:35.503Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:o:tenda:ac20_firmware:*:*:*:*:*:*:*:*"
          ],
          "product": "AC20",
          "vendor": "Tenda",
          "versions": [
            {
              "status": "affected",
              "version": "16.03.08.0"
            },
            {
              "status": "affected",
              "version": "16.03.08.1"
            },
            {
              "status": "affected",
              "version": "16.03.08.2"
            },
            {
              "status": "affected",
              "version": "16.03.08.3"
            },
            {
              "status": "affected",
              "version": "16.03.08.4"
            },
            {
              "status": "affected",
              "version": "16.03.08.5"
            },
            {
              "status": "affected",
              "version": "16.03.08.6"
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            {
              "status": "affected",
              "version": "16.03.08.7"
            },
            {
              "status": "affected",
              "version": "16.03.08.8"
            },
            {
              "status": "affected",
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            {
              "status": "affected",
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            },
            {
              "status": "affected",
              "version": "16.03.08.11"
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      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "cymiao (VulDB User)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability has been found in Tenda AC20 up to 16.03.08.12. The affected element is the function sscanf of the file /goform/fast_setting_wifi_set. The manipulation of the argument timeZone leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
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        {
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      "providerMetadata": {
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        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
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        },
        {
          "name": "VDB-327312 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
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            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.327312"
        },
        {
          "name": "Submit #664922 | Shenzhen Tenda Technology Co.,Ltd. AC20 \u003c= V16.03.08.12 (latest) Buffer Overflow",
          "tags": [
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          "time": "2025-10-06T02:00:00.000Z",
          "value": "VulDB entry created"
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          "lang": "en",
          "time": "2025-10-07T14:10:51.000Z",
          "value": "VulDB entry last update"
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      "title": "Tenda AC20 fast_setting_wifi_set sscanf buffer overflow"
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  "cveMetadata": {
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    "datePublished": "2025-10-07T09:32:06.697Z",
    "dateReserved": "2025-10-06T19:24:32.774Z",
    "dateUpdated": "2026-02-24T06:47:32.444Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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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.