Vulnerability-Lookup

CNVD-2026-25142

Vulnerability from cnvd - Published: 2026-06-24

Title

Zyxel DX3301-T0资源管理错误漏洞

Description

Zyxel DX3301-T0是中国合勤（Zyxel）公司的一个小型无线WiFi路由器。 Zyxel DX3301-T0 5.50(ABVY.6.3)C0及之前版本存在资源管理错误漏洞，该漏洞源于Web服务器资源消耗不受控制，攻击者可利用该漏洞导致Slowloris式拒绝服务攻击。

Severity

高

Patch Name

Zyxel DX3301-T0资源管理错误漏洞的补丁

Patch Description

Zyxel DX3301-T0是中国合勤（Zyxel）公司的一个小型无线WiFi路由器。 Zyxel DX3301-T0 5.50(ABVY.6.3)C0及之前版本存在资源管理错误漏洞，该漏洞源于Web服务器资源消耗不受控制，攻击者可利用该漏洞导致Slowloris式拒绝服务攻击。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

用户可参考如下供应商提供的安全公告获得补丁信息： https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-uncontrolled-resource-consumption-and-command-injection-vulnerabilities-in-certain-4g-lte-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-security-routers-and-wireless-extenders-11-18-2025

Reference

https://nvd.nist.gov/vuln/detail/CVE-2025-6599

Impacted products

Name
ZyXEL dx3301-t0 <=5.50(ABVY.6.3)C0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2025-6599"
    }
  },
  "description": "Zyxel DX3301-T0\u662f\u4e2d\u56fd\u5408\u52e4\uff08Zyxel\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u5c0f\u578b\u65e0\u7ebfWiFi\u8def\u7531\u5668\u3002\n\nZyxel DX3301-T0 5.50(ABVY.6.3)C0\u53ca\u4e4b\u524d\u7248\u672c\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eWeb\u670d\u52a1\u5668\u8d44\u6e90\u6d88\u8017\u4e0d\u53d7\u63a7\u5236\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4Slowloris\u5f0f\u62d2\u7edd\u670d\u52a1\u653b\u51fb\u3002",
  "formalWay": "\u7528\u6237\u53ef\u53c2\u8003\u5982\u4e0b\u4f9b\u5e94\u5546\u63d0\u4f9b\u7684\u5b89\u5168\u516c\u544a\u83b7\u5f97\u8865\u4e01\u4fe1\u606f\uff1a\r\nhttps://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-uncontrolled-resource-consumption-and-command-injection-vulnerabilities-in-certain-4g-lte-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-security-routers-and-wireless-extenders-11-18-2025",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-25142",
  "openTime": "2026-06-24",
  "patchDescription": "Zyxel DX3301-T0\u662f\u4e2d\u56fd\u5408\u52e4\uff08Zyxel\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u5c0f\u578b\u65e0\u7ebfWiFi\u8def\u7531\u5668\u3002\r\n\r\nZyxel DX3301-T0 5.50(ABVY.6.3)C0\u53ca\u4e4b\u524d\u7248\u672c\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eWeb\u670d\u52a1\u5668\u8d44\u6e90\u6d88\u8017\u4e0d\u53d7\u63a7\u5236\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4Slowloris\u5f0f\u62d2\u7edd\u670d\u52a1\u653b\u51fb\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Zyxel DX3301-T0\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "ZyXEL dx3301-t0 \u003c=5.50(ABVY.6.3)C0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2025-6599",
  "serverity": "\u9ad8",
  "submitTime": "2025-11-20",
  "title": "Zyxel DX3301-T0\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2025-6599 (GCVE-0-2025-6599)

Vulnerability from cvelistv5 – Published: 2025-11-18 01:19 – Updated: 2025-11-18 16:35

Summary

An uncontrolled resource consumption vulnerability in the web server of Zyxel DX3301-T0 firmware version 5.50(ABVY.6.3)C0 and earlier could allow an attacker to perform Slowloris‑style denial‑of‑service (DoS) attacks. Such attacks may temporarily block legitimate HTTP requests and partially disrupt access to the web management interface, while other networking services remain unaffected.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-11-18 14:25 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

Zyxel mitre root

References

1 reference

URL	Tags
https://www.zyxel.com/global/en/support/security-…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Zyxel	DX3301-T0 firmware	Affected: <= 5.50(ABVY.6.3)C0

Show details on NVD website

JSON

To clipboard

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        "metrics": [
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            "other": {
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                "id": "CVE-2025-6599",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-11-18T14:25:06.732705Z",
                "version": "2.0.3"
              },
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        "providerMetadata": {
          "dateUpdated": "2025-11-18T16:35:31.932Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "DX3301-T0 firmware",
          "vendor": "Zyxel",
          "versions": [
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              "status": "affected",
              "version": "\u003c= 5.50(ABVY.6.3)C0"
            }
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              "type": "text/html",
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            }
          ],
          "value": "An uncontrolled resource consumption vulnerability in the web server of Zyxel DX3301-T0 firmware version 5.50(ABVY.6.3)C0 and earlier could allow an attacker to perform Slowloris\u2011style denial\u2011of\u2011service (DoS) attacks. Such attacks may temporarily block legitimate HTTP requests and partially disrupt access to the web management interface, while other networking services remain unaffected."
        }
      ],
      "metrics": [
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
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            "userInteraction": "NONE",
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        "orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
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    "dateReserved": "2025-06-25T02:16:25.675Z",
    "dateUpdated": "2025-11-18T16:35:31.932Z",
    "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.

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.

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CNVD-2026-25142

CVE-2025-6599 (GCVE-0-2025-6599)

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Nomenclature

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