CVE-2011-2516

Estado: ModificadaMedia (5)—
Off-by-one error in the XML signature feature in Apache XML Security for C++ 1.6.0, as used in Shibboleth before 2.4.3 and possibly other products, allows remote attackers to cause a denial of service (crash) via a signature using a large RSA key, which triggers a buffer overflow.
CVSS

Versión: 2.0
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Puntuación base: 5
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 7.72%
Percentil entre todas las CVEs puntuadas: 94
Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (2)

Apache — XML Security FOR C++Shibboleth — Shibboleth-sp
CWE

CWE-189
Referencias

JSON original (NVD)

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  "id": "CVE-2011-2516",
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
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        "impactScore": 2.9,
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  "published": "2011-07-11T20:55:01.380",
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          "value": "CWE-189"
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  "descriptions": [
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      "lang": "en",
      "value": "Off-by-one error in the XML signature feature in Apache XML Security for C++ 1.6.0, as used in Shibboleth before 2.4.3 and possibly other products, allows remote attackers to cause a denial of service (crash) via a signature using a large RSA key, which triggers a buffer overflow."
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      "lang": "es",
      "value": "Error de superación de límite (off-by-one) en la característica de firma XML en Apache XML Security para C++ v1.6.0,usado en Shibboleth anterior a v2.4.3 y posiblemente otros productos, permite a atacantes remotos provocar una denegación de servicio (caída) a través de una firma utilizando una clave RSA larga, que provoca un desbordamiento de búfer."
    }
  ],
  "lastModified": "2026-06-16T23:31:29.877",
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