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Activamente explotadaCVSS 9.8 · CRITICAL

CVE-2008-4250

Microsoft Windows contains a buffer overflow vulnerability in the Windows Server Service that allows remote attackers to execute arbitrary code via a crafted RPC request that triggers an overflow during path canonicalization.

Ver en NVD

Análisis

Microsoft Windows contains a critical pre-authentication remote code execution (RCE) vulnerability in the Server service. An attacker can gain full control of the system via a crafted RPC request; this specific flaw was famously used by the Conficker worm and remains on the CISA KEV list.

Roles relevantes

WindowsCyberSecurityBackend

Severidad

Puntaje: 9.8(CRITICAL)
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV: NETWORK
AC: LOW
PR: NONE
UI: NONE
S: UNCHANGED
C: HIGH
I: HIGH
A: HIGH
Tipo de falla (CWE): CWE-94CWE-119

CISA KEV

Agregada al KEV: 2026-05-20
Fecha límite federal: 2026-06-03
Uso conocido en ransomware: Unknown
Acción requerida

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

EPSS

Probabilidad de explotación (próx. 30 días): 0.9208 (92.1%)
Percentil: 99.7%
EPSS: 2026-05-25

Afecta

microsoft:windows_2000microsoft:windows_server_2003microsoft:windows_server_2008microsoft:windows_vistamicrosoft:windows_xp

Descripción técnica

The Server service in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, Server 2008, and 7 Pre-Beta allows remote attackers to execute arbitrary code via a crafted RPC request that triggers the overflow during path canonicalization, as exploited in the wild by Gimmiv.A in October 2008, aka "Server Service Vulnerability."

Publicada: 23/10/2008, 22:00:01
Última modificación: 21/5/2026, 12:57:17

Referencias

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