FKIE_CVE-2026-22903

Vulnerability from fkie_nvd - Published: 2026-02-09 08:16 - Updated: 2026-02-09 16:08
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
An unauthenticated remote attacker can send a crafted HTTP request containing an overly long SESSIONID cookie. This can trigger a stack buffer overflow in the modified lighttpd server, causing it to crash and potentially enabling remote code execution due to missing stack protections.
References
info@cert.vde.comhttps://certvde.com/de/advisories/VDE-2026-004
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An unauthenticated remote attacker can send a crafted HTTP request containing an overly long SESSIONID cookie. This can trigger a stack buffer overflow in the modified lighttpd server, causing it to crash and potentially enabling remote code execution due to missing stack protections."
    },
    {
      "lang": "es",
      "value": "Un atacante remoto no autenticado puede enviar una solicitud HTTP manipulada que contiene una cookie SESSIONID excesivamente larga. Esto puede desencadenar un desbordamiento de b\u00fafer de pila en el servidor lighttpd modificado, lo que provoca su ca\u00edda y potencialmente permite la ejecuci\u00f3n remota de c\u00f3digo debido a la falta de protecciones de pila."
    }
  ],
  "id": "CVE-2026-22903",
  "lastModified": "2026-02-09T16:08:35.290",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "info@cert.vde.com",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-02-09T08:16:10.103",
  "references": [
    {
      "source": "info@cert.vde.com",
      "url": "https://certvde.com/de/advisories/VDE-2026-004"
    }
  ],
  "sourceIdentifier": "info@cert.vde.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-121"
        }
      ],
      "source": "info@cert.vde.com",
      "type": "Primary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.