Vulnerability-Lookup

CNVD-2026-38833

Vulnerability from cnvd - Published: 2026-09-28

Title

Netcore NR255 V信息泄露漏洞（CNVD-2026-38833）

Description

Netcore NR255 V是磊科（netcore）推出的一款‌企业级上网行为管理路由器‌。 Netcore NR255 V存在信息泄露漏洞，该漏洞源于mod_vpn_remote/plan.json、pptpd_user_show.cgi、pptp_client_config_show.cgi和l2tpd_user_show.cgi存在敏感信息泄露，攻击者可利用该漏洞获取点对点隧道协议和二层隧道协议VPN凭据，导致敏感信息泄露。

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.netcoretec.com/

Reference

https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-pptp-l2tp-cred-disclosure.md https://www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-sensitive-information-disclosure-via-vpn-read-handlers

Impacted products

Name
Netcore NR255 V 1.5.130703

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-76871",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-76871"
    }
  },
  "description": "Netcore NR255 V\u662f\u78ca\u79d1\uff08netcore\uff09\u63a8\u51fa\u7684\u4e00\u6b3e\u200c\u4f01\u4e1a\u7ea7\u4e0a\u7f51\u884c\u4e3a\u7ba1\u7406\u8def\u7531\u5668\u200c\u3002\n\nNetcore NR255 V\u5b58\u5728\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8emod_vpn_remote/plan.json\u3001pptpd_user_show.cgi\u3001pptp_client_config_show.cgi\u548cl2tpd_user_show.cgi\u5b58\u5728\u654f\u611f\u4fe1\u606f\u6cc4\u9732\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u70b9\u5bf9\u70b9\u96a7\u9053\u534f\u8bae\u548c\u4e8c\u5c42\u96a7\u9053\u534f\u8baeVPN\u51ed\u636e\uff0c\u5bfc\u81f4\u654f\u611f\u4fe1\u606f\u6cc4\u9732\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.netcoretec.com/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-38833",
  "openTime": "2026-09-28",
  "products": {
    "product": "Netcore NR255 V 1.5.130703"
  },
  "referenceLink": "https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-pptp-l2tp-cred-disclosure.md\r\nhttps://www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-sensitive-information-disclosure-via-vpn-read-handlers",
  "serverity": "\u4e2d",
  "submitTime": "2026-09-21",
  "title": "Netcore NR255 V\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2026-38833\uff09"
}

CVE-2026-76871 (GCVE-0-2026-76871)

Vulnerability from cvelistv5 – Published: 2026-09-15 21:58 – Updated: 2026-09-21 17:54

Title

Netcore NR255-V 1.5.130703 Sensitive Information Disclosure via VPN Read Handlers

Summary

Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in mod_vpn_remote/plan.json, pptpd_user_show.cgi, pptp_client_config_show.cgi, and l2tpd_user_show.cgi. Attackers can leverage these components to obtain PPTP and L2TP VPN credentials.

Severity

7.1 (High)


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

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-21 17:54 UTC

CWE

CWE-522 - Insufficiently Protected Credentials

Assigner

VulnCheck mitre root Scorecard

References

2 references

URL	Tags
https://github.com/draw-ctf/netcore-router-public…	third-party-advisory
https://www.vulncheck.com/advisories/netcore-nr25…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Netcore	NR255-V	Affected: 1.5.130703 (custom)

Date Public

2026-09-04 00:00

Credits

Zhou Ao Yin Luxing Jiang Yuxuan Liu Xin @Nebusec

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-76871",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-21T17:54:25.347090Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-21T17:54:33.920Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "NR255-V",
          "vendor": "Netcore",
          "versions": [
            {
              "status": "affected",
              "version": "1.5.130703",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Zhou Ao"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Yin Luxing"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Jiang Yuxuan"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Liu Xin"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "@Nebusec"
        }
      ],
      "datePublic": "2026-09-04T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in mod_vpn_remote/plan.json, pptpd_user_show.cgi, pptp_client_config_show.cgi, and l2tpd_user_show.cgi. Attackers can leverage these components to obtain PPTP and L2TP VPN credentials."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE"
          },
          "format": "CVSS"
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        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
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              "cweId": "CWE-522",
              "description": "Insufficiently Protected Credentials",
              "lang": "en",
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-15T21:58:01.852Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "Netcore router public references: PPTP/L2TP VPN Credential Disclosure via Read Handlers",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-pptp-l2tp-cred-disclosure.md"
        },
        {
          "name": "VulnCheck Advisory: Netcore NR255-V 1.5.130703 Sensitive Information Disclosure via VPN Read Handlers",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-sensitive-information-disclosure-via-vpn-read-handlers"
        }
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      "title": "Netcore NR255-V 1.5.130703 Sensitive Information Disclosure via VPN Read Handlers",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-76871",
    "datePublished": "2026-09-15T21:58:01.852Z",
    "dateReserved": "2026-08-19T21:47:08.936Z",
    "dateUpdated": "2026-09-21T17:54:33.920Z",
    "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.

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.
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CNVD-2026-38833

CVE-2026-76871 (GCVE-0-2026-76871)

Tags

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