CVE-2025-54939

Estado: AnalizadaAlta (7.5)—

LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory leak.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 7.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.80%
Percentil entre todas las CVEs puntuadas: 55
Fecha de la puntuación: 6/10/2026

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).

🎯 Técnicas ATT&CK

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

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access60 %
Impacto principalT1499 Endpoint Denial of Serviceimpact55 %

Inferido por reglas deterministas a partir del vector CVSS y la CWE. Solo orientativo.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Filter Network Traffic Vulnerability Scanning Privileged Account Management Network Segmentation Limit Access to Resource Over Network Application Isolation and Sandboxing

Tecnologías afectadas (4)

Litespeedtech — Litespeed WEB ADC Litespeedtech — Litespeed WEB Server Litespeedtech — Lsquic Litespeedtech — Openlitespeed

CWE

CWE-770
CWE-401

Referencias

JSON original (NVD)

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  "id": "CVE-2025-54939",
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
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              "automatable": "no"
            },
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2025-08-01T17:49:17.600012Z"
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          "integrityImpact": "NONE",
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          "privilegesRequired": "NONE",
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  "published": "2025-08-01T06:15:28.860",
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    },
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      "lang": "es",
      "value": "La librería LiteSpeed QUIC (LSQUIC) anterior a 4.3.1 tiene una pérdida de memoria lsquic_engine_packet_in."
    }
  ],
  "lastModified": "2026-06-17T09:40:57.463",
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