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CVE-2025-52566

Estado: AnalizadaAlta (8.8)—

llama.cpp is an inference of several LLM models in C/C++. Prior to version b5721, there is a signed vs. unsigned integer overflow in llama.cpp's tokenizer implementation (llama_vocab::tokenize) (src/llama-vocab.cpp:3036) resulting in unintended behavior in tokens copying size comparison. Allowing heap-overflowing llama.cpp inferencing engine with carefully manipulated text input during tokenization process. This issue has been patched in version b5721.

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 (interacción del usuario al procesar entrada de texto) + vulnerabilidad de desbordamiento de búfer en tokenizador. La entrada manipulada causa ejecución de código en el proceso del cliente.

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

Restrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationExecution PreventionBehavior Prevention on EndpointDisable or Remove Feature or Program

Tecnologías afectadas (1)

Ggml — Llama.cpp

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2025-52566",
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          "version": "2.0.3",
          "timestamp": "2025-06-24T21:49:17.452816Z"
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      "value": "llama.cpp es una inferencia de varios modelos LLM en C/C++. Antes de la versión b5721, se producía un desbordamiento de enteros con signo y sin signo en la implementación del tokenizador de llama.cpp (llama_vocab::tokenize) (src/llama-vocab.cpp:3036), lo que provocaba un comportamiento no deseado al comparar el tamaño de copia de tokens. Esto permitía el desbordamiento del montón del motor de inferencia de llama.cpp con una entrada de texto cuidadosamente manipulada durante el proceso de tokenización. Este problema se ha corregido en la versión b5721."
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  "lastModified": "2026-06-17T09:36:41.500",
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