Vulnerability-Lookup

CNVD-2026-21231

Vulnerability from cnvd - Published: 2026-05-21

Title

Linksys MR9600和Linksys MX4200操作系统命令注入漏洞（CNVD-2026-21231）

Description

Linksys MR9600是一款无线路由器。Linksys MX4200是一个网状网络路由器。 Linksys MR9600和Linksys MX4200存在操作系统命令注入漏洞，该漏洞源于特殊元素中和缺失，攻击者可利用该漏洞导致OS命令注入。

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://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-010.txt

Reference

https://nvd.nist.gov/vuln/detail/CVE-2026-27848

Impacted products

Name
['Linksys mr9600 1.0.4.205530', 'Linksys MX4200 1.0.13.210200']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-27848",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-27848"
    }
  },
  "description": "Linksys MR9600\u662f\u4e00\u6b3e\u65e0\u7ebf\u8def\u7531\u5668\u3002Linksys MX4200\u662f\u4e00\u4e2a\u7f51\u72b6\u7f51\u7edc\u8def\u7531\u5668\u3002\n\nLinksys MR9600\u548cLinksys MX4200\u5b58\u5728\u64cd\u4f5c\u7cfb\u7edf\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7279\u6b8a\u5143\u7d20\u4e2d\u548c\u7f3a\u5931\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4OS\u547d\u4ee4\u6ce8\u5165\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://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-010.txt",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-21231",
  "openTime": "2026-05-21",
  "products": {
    "product": [
      "Linksys mr9600 1.0.4.205530",
      "Linksys MX4200 1.0.13.210200"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2026-27848",
  "serverity": "\u9ad8",
  "submitTime": "2026-03-09",
  "title": "Linksys MR9600\u548cLinksys MX4200\u64cd\u4f5c\u7cfb\u7edf\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e\uff08CNVD-2026-21231\uff09"
}

CVE-2026-27848 (GCVE-0-2026-27848)

Vulnerability from cvelistv5 – Published: 2026-02-25 15:15 – Updated: 2026-02-26 16:51

Title

Missing neutralization in Linksys MR9600, Linksys MX4200

Summary

Due to missing neutralization of special elements, OS commands can be injected via the handshake of a TLS-SRP connection, which are ultimately run as the root user. This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.

Severity

9.8 (Critical)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Assigner

ENISA

References

1 reference

URL	Tags
https://www.syss.de/fileadmin/dokumente/Publikati…	third-party-advisorytechnical-description

Impacted products

2 products

Vendor	Product	Version
Linksys	MR9600	Affected: 1.0.4.205530
Linksys	MX4200	Affected: 1.0.13.210200

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-27848",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-26T16:50:25.890966Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-26T16:51:13.433Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "MR9600",
          "vendor": "Linksys",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.4.205530"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "MX4200",
          "vendor": "Linksys",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.13.210200"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Due to missing neutralization of special elements, OS commands can be injected via the handshake of a TLS-SRP connection, which are ultimately run as the root user.\u003cbr\u003e\u003cp\u003eThis issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.\u003c/p\u003e"
            }
          ],
          "value": "Due to missing neutralization of special elements, OS commands can be injected via the handshake of a TLS-SRP connection, which are ultimately run as the root user.\nThis issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-78",
              "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-25T15:15:16.186Z",
        "orgId": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158",
        "shortName": "ENISA"
      },
      "references": [
        {
          "tags": [
            "third-party-advisory",
            "technical-description"
          ],
          "url": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-010.txt"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Missing neutralization in Linksys MR9600, Linksys MX4200",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158",
    "assignerShortName": "ENISA",
    "cveId": "CVE-2026-27848",
    "datePublished": "2026-02-25T15:15:16.186Z",
    "dateReserved": "2026-02-24T07:07:48.974Z",
    "dateUpdated": "2026-02-26T16:51:13.433Z",
    "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.

Action not permitted

CNVD-2026-21231

CVE-2026-27848 (GCVE-0-2026-27848)

Tags

Sightings

Nomenclature