Vulnerability-Lookup

CNVD-2026-33594

Vulnerability from cnvd - Published: 2026-08-25

Title

TOTOLINK EX1200L空指针引用漏洞（CNVD-2026-33594）

Description

TOTOLINK EX1200L是一款双频无线信号放大器,主要用于扩展家庭或办公环境的Wi-Fi覆盖范围,解决信号弱或死角问题。 TOTOLINK EX1200L存在空指针引用漏洞，该漏洞源于/cgi-bin/cstecgi.cgi文件中的setWizardCfg函数未能正确处理特定输入，导致空指针解引用，攻击者可利用该漏洞远程发起攻击造成设备异常。

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.totolink.net/

Reference

https://vuldb.com/vuln/391273

Impacted products

Name
TOTOLINK EX1200L 9.3.5u.6146_B20201023

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-75013",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-75013"
    }
  },
  "description": "TOTOLINK EX1200L\u662f\u4e00\u6b3e\u53cc\u9891\u65e0\u7ebf\u4fe1\u53f7\u653e\u5927\u5668,\u4e3b\u8981\u7528\u4e8e\u6269\u5c55\u5bb6\u5ead\u6216\u529e\u516c\u73af\u5883\u7684Wi-Fi\u8986\u76d6\u8303\u56f4,\u89e3\u51b3\u4fe1\u53f7\u5f31\u6216\u6b7b\u89d2\u95ee\u9898\u3002\n\nTOTOLINK EX1200L\u5b58\u5728\u7a7a\u6307\u9488\u5f15\u7528\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e/cgi-bin/cstecgi.cgi\u6587\u4ef6\u4e2d\u7684setWizardCfg\u51fd\u6570\u672a\u80fd\u6b63\u786e\u5904\u7406\u7279\u5b9a\u8f93\u5165\uff0c\u5bfc\u81f4\u7a7a\u6307\u9488\u89e3\u5f15\u7528\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8fdc\u7a0b\u53d1\u8d77\u653b\u51fb\u9020\u6210\u8bbe\u5907\u5f02\u5e38\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.totolink.net/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-33594",
  "openTime": "2026-08-25",
  "products": {
    "product": "TOTOLINK EX1200L 9.3.5u.6146_B20201023"
  },
  "referenceLink": "https://vuldb.com/vuln/391273",
  "serverity": "\u4e2d",
  "submitTime": "2026-08-18",
  "title": "TOTOLINK EX1200L\u7a7a\u6307\u9488\u5f15\u7528\u6f0f\u6d1e\uff08CNVD-2026-33594\uff09"
}

CVE-2026-75013 (GCVE-0-2026-75013)

Vulnerability from cvelistv5 – Published: 2026-08-17 19:30 – Updated: 2026-08-18 14:54

Title

TOTOLINK EX1200L cstecgi.cgi setWizardCfg null pointer dereference

Summary

A vulnerability was detected in TOTOLINK EX1200L 9.3.5u.6146_B20201023. This affects the function setWizardCfg of the file /cgi-bin/cstecgi.cgi. The manipulation results in null pointer dereference. The attack can be launched remotely. The exploit is now public and may be used.

Severity

7.1 (High)


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

6.5 (Medium)


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

6.5 (Medium)


                        
                          CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 2026-08-18 14:54 UTC

CWE

CWE-476 - NULL Pointer Dereference
CWE-404 - Denial of Service

Assigner

VulDB mitre root

References

6 references

URL	Tags
https://vuldb.com/vuln/391273	vdb-entrytechnical-description
https://vuldb.com/vuln/391273/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-75013	third-party-advisory
https://vuldb.com/submit/876033	third-party-advisory
https://gist.github.com/wyxstarry/21e6c2853891a3b…	exploit
https://www.totolink.net/	product

Impacted products

1 product

Vendor	Product	Version
TOTOLINK	EX1200L	Affected: 9.3.5u.6146_B20201023 cpe:2.3:a:totolink:ex1200l::::::::

Credits

yuxin_wang (VulDB User)

Show details on NVD website

JSON

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                  },
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                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2026-08-18T14:54:32.424759Z",
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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.