cnvd - cnvd-2025-19580

CNVD-2025-19580

Vulnerability from cnvd - Published: 2025-08-28

Title

Tenda AC20缓冲区溢出漏洞（CNVD-2025-19580）

Description

Tenda AC20是中国腾达（Tenda）公司的一款无线路由器。 Tenda AC20存在缓冲区溢出漏洞，该漏洞源于文件/goform/saveParentControlInfo中参数Time未能正确验证输入数据的长度大小，攻击者可利用该漏洞在系统上执行任意代码或者导致拒绝服务。

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://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20-2/Tenda%20AC20-2.md

Reference

https://nvd.nist.gov/vuln/detail/CVE-2025-8940

Impacted products

Name
深圳市吉祥腾达科技有限公司 AC20 <=16.03.08.12

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JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2025-8940",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-8940"
    }
  },
  "description": "Tenda AC20\u662f\u4e2d\u56fd\u817e\u8fbe\uff08Tenda\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u65e0\u7ebf\u8def\u7531\u5668\u3002\n\nTenda AC20\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u6587\u4ef6/goform/saveParentControlInfo\u4e2d\u53c2\u6570Time\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1\u8f93\u5165\u6570\u636e\u7684\u957f\u5ea6\u5927\u5c0f\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u7cfb\u7edf\u4e0a\u6267\u884c\u4efb\u610f\u4ee3\u7801\u6216\u8005\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://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20-2/Tenda%20AC20-2.md",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2025-19580",
  "openTime": "2025-08-28",
  "products": {
    "product": "\u6df1\u5733\u5e02\u5409\u7965\u817e\u8fbe\u79d1\u6280\u6709\u9650\u516c\u53f8 AC20 \u003c=16.03.08.12"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2025-8940",
  "serverity": "\u9ad8",
  "submitTime": "2025-08-20",
  "title": "Tenda AC20\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2025-19580\uff09"
}

CVE-2025-8940 (GCVE-0-2025-8940)

Vulnerability from cvelistv5 – Published: 2025-08-14 05:32 – Updated: 2025-08-15 12:58

Title

Tenda AC20 saveParentControlInfo strcpy buffer overflow

Summary

A vulnerability was identified in Tenda AC20 up to 16.03.08.12. Affected by this vulnerability is the function strcpy of the file /goform/saveParentControlInfo. The manipulation of the argument Time leads to buffer overflow. The attack can be launched 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

CWE

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

Assigner

VulDB

References

URL

Tags

	https://vuldb.com/?id.319903	vdb-entrytechnical-description
	https://vuldb.com/?ctiid.319903	signaturepermissions-required
	https://vuldb.com/?submit.631836	third-party-advisory
	https://github.com/lin-3-start/lin-cve/blob/main/…	related
	https://github.com/lin-3-start/lin-cve/blob/main/…	exploit
	https://www.tenda.com.cn/	product

Impacted products

	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

Credits

QMSSDXN (VulDB User)

Show details on NVD website

JSON

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                "id": "CVE-2025-8940",
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                  },
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-08-15T12:13:16.584763Z",
                "version": "2.0.3"
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            },
            {
              "status": "affected",
              "version": "16.03.08.2"
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              "status": "affected",
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            {
              "status": "affected",
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            },
            {
              "status": "affected",
              "version": "16.03.08.6"
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            {
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        },
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Sightings

Author	Source	Type	Date

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.

Action not permitted

CNVD-2025-19580

CVE-2025-8940 (GCVE-0-2025-8940)

Tags

Sightings

Nomenclature