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CVE-2026-26269

Estado: AnalizadaAlta (7.5)—

Vim is an open source, command line text editor. Prior to 9.1.2148, a stack buffer overflow vulnerability exists in Vim's NetBeans integration when processing the specialKeys command, affecting Vim builds that enable and use the NetBeans feature. The Stack buffer overflow exists in special_keys() (in src/netbeans.c). The while (*tok) loop writes two bytes per iteration into a 64-byte stack buffer (keybuf) with no bounds check. A malicious NetBeans server can overflow keybuf with a single specialKeys command. The issue has been fixed as of Vim patch v9.1.2148.

CVSS

Probabilidad de explotación (EPSS)

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

UI:R (requiere interacción del usuario: abrir archivo NetBeans preparado) dicta T1203. Stack buffer overflow permite ejecución de código arbitrario (T1059) y potencial escalada local (T1068).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Execution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareThreat Intelligence ProgramRestrict Web-Based Content

Tecnologías afectadas (1)

VIM — VIM

CWE

Referencias

JSON original (NVD)

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      "value": "Vim is an open source, command line text editor. Prior to 9.1.2148, a stack buffer overflow vulnerability exists in Vim's NetBeans integration when processing the specialKeys command, affecting Vim builds that enable and use the NetBeans feature. The Stack buffer overflow exists in special_keys() (in src/netbeans.c). The while (*tok) loop writes two bytes per iteration into a 64-byte stack buffer (keybuf) with no bounds check. A malicious NetBeans server can overflow keybuf with a single specialKeys command. The issue has been fixed as of Vim patch v9.1.2148."
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      "value": "Vim es un editor de texto de código abierto, de línea de comandos. Antes de la versión 9.1.2148, existe una vulnerabilidad de desbordamiento de búfer de pila en la integración de NetBeans de Vim al procesar el comando specialKeys, afectando a las compilaciones de Vim que habilitan y usan la característica de NetBeans. El desbordamiento de búfer de pila existe en special_keys() (en src/netbeans.c). El bucle while (*tok) escribe dos bytes por iteración en un búfer de pila de 64 bytes (keybuf) sin verificación de límites. Un servidor NetBeans malicioso puede desbordar keybuf con un solo comando specialKeys. El problema ha sido solucionado a partir del parche de Vim v9.1.2148."
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  "lastModified": "2026-06-17T10:26:01.037",
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