CVE-2008-4539

Estado: ModificadaAlta (7.2)—
Heap-based buffer overflow in the Cirrus VGA implementation in (1) KVM before kvm-82 and (2) QEMU on Debian GNU/Linux and Ubuntu might allow local users to gain privileges by using the VNC console for a connection, aka the LGD-54XX "bitblt" heap overflow. NOTE: this issue exists because of an incorrect fix for CVE-2007-1320.
CVSS

Versión: 2.0
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Puntuación base: 7.2
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.54%
Percentil entre todas las CVEs puntuadas: 43
Fecha de la puntuación: 4/10/2026
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 (4)

Canonical — Ubuntu Linux Debian — Debian Linux KVM Qumranet — KVM Qemu — Qemu
CWE

CWE-119
Referencias

JSON original (NVD)

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          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
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        "obtainAllPrivilege": false,
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          "lang": "en",
          "value": "CWE-119"
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      "lang": "en",
      "value": "Heap-based buffer overflow in the Cirrus VGA implementation in (1) KVM before kvm-82 and (2) QEMU on Debian GNU/Linux and Ubuntu might allow local users to gain privileges by using the VNC console for a connection, aka the LGD-54XX \"bitblt\" heap overflow.  NOTE: this issue exists because of an incorrect fix for CVE-2007-1320."
    },
    {
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      "value": "Desbordamiento de búfer basado en montículo en la implementación Cirrus VGA en (1) KVM anterior a kvm-82 y (2) QEMU sobre Debian GNU/Linux y Ubuntu, podría permitir a usuarios locales obtener privilegios mediante el uso de la consola VNC para realizar una conexión, también conocido como el desbordamiento LGD-54XX \"bitblt\". NOTA: esta cuestión existe por una incorrecta corrección del CVE-2007-1320."
    }
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  "lastModified": "2026-06-16T22:58:01.740",
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