cve-2026-107441

HIGH CVSS 8.8 fkie_nvd
Description

An out-of-bounds write vulnerability in the CGI program of Zyxel GS1900-24E firmware versions through 2.90(AAHK.2)C0 could allow an unauthenticated adjacent attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.

Timeline
Published
unknown
Last Modified
unknown
CVSS Details
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
Affected Products

No product information available.

Weaknesses (CWE)
CWE-787
CVSS metrics
Version Base Severity Vector Exploitability Impact Source
3.1 8.8 HIGH CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 2.8 5.9 security@zyxel.com.tw
NVD metadata
NVD status
Awaiting Analysis
Source identifier
security@zyxel.com.tw
References
Linked Vulnerabilities

No linked vulnerabilities found.

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "GS1900-24E firmware",
          "vendor": "Zyxel",
          "versions": [
            {
              "status": "affected",
              "version": "<= 2.90(AAHK.2)C0"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "GS1900-8 firmware",
          "vendor": "Zyxel",
          "versions": [
            {
              "status": "affected",
              "version": "<= 2.90(AAHH.2)C0"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "GS1900-8HP firmware",
          "vendor": "Zyxel",
          "versions": [
            {
              "status": "affected",
              "version": "<= 2.90(AAHI.2)C0"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "GS1900-10HP firmware",
          "vendor": "Zyxel",
          "versions": [
            {
              "status": "affected",
              "version": "<= 2.90(AAZI.2)C0"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "GS1900-16 firmware",
          "vendor": "Zyxel",
          "versions": [
            {
              "status": "affected",
              "version": "<= 2.90(AAHJ.2)C0"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "GS1900-24 firmware",
          "vendor": "Zyxel",
          "versions": [
            {
              "status": "affected",
              "version": "<= 2.90(AAHL.2)C0"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "GS1900-24EP firmware",
          "vendor": "Zyxel",
          "versions": [
            {
              "status": "affected",
              "version": "<= 2.90(ABTO.2)C0"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "GS1900-HPv2 firmware",
          "vendor": "Zyxel",
          "versions": [
            {
              "status": "affected",
              "version": "<= 2.90(ABTP.2)C0"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "GS1900-48 firmware",
          "vendor": "Zyxel",
          "versions": [
            {
              "status": "affected",
              "version": "<= 2.90(AAHN.2)C0"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "GS1900-48HPv2 firmware",
          "vendor": "Zyxel",
          "versions": [
            {
              "status": "affected",
              "version": "<= 2.90(ABTQ.2)C0"
            }
          ]
        }
      ],
      "source": "security@zyxel.com.tw"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An out-of-bounds write vulnerability in the CGI program of Zyxel GS1900-24E firmware versions through 2.90(AAHK.2)C0 could allow an unauthenticated adjacent attacker  to exploit the flaw and potentially execute OS commands via a crafted HTTP request."
    }
  ],
  "id": "CVE-2026-107441",
  "lastModified": "2026-11-05T05:18:18.850",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "security@zyxel.com.tw",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-107441",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-11-03T00:00:00+00:00",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-11-03T02:16:52.617",
  "references": [
    {
      "source": "security@zyxel.com.tw",
      "url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-out-of-bounds-write-vulnerability-in-gs1900-series-switches-11-03-2026"
    }
  ],
  "sourceIdentifier": "security@zyxel.com.tw",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "security@zyxel.com.tw",
      "type": "Secondary"
    }
  ]
}
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