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CVE-2020-25648

Estado: ModificadaAlta (7.5)—

A flaw was found in the way NSS handled CCS (ChangeCipherSpec) messages in TLS 1.3. This flaw allows a remote attacker to send multiple CCS messages, causing a denial of service for servers compiled with the NSS library. The highest threat from this vulnerability is to system availability. This flaw affects NSS versions before 3.58.

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).

Tecnologías afectadas (6)

Fedoraproject — FedoraMozilla — Network Security ServicesOracle — Communications Offline Mediation ControllerOracle — Communications Pricing Design CenterOracle — JD Edwards Enterpriseone ToolsRedhat — Enterprise Linux

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2020-25648",
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          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
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      "value": "A flaw was found in the way NSS handled CCS (ChangeCipherSpec) messages in TLS 1.3. This flaw allows a remote attacker to send multiple CCS messages, causing a denial of service for servers compiled with the NSS library. The highest threat from this vulnerability is to system availability. This flaw affects NSS versions before 3.58."
    },
    {
      "lang": "es",
      "value": "Se encontró un fallo en la manera en que NSS manejaba los mensajes CCS (ChangeCipherSpec) en TLS versión 1.3. Este fallo permite a un atacante remoto enviar múltiples mensajes CCS, causando una denegación de servicio para los servidores compilados con la biblioteca NSS. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema. Este fallo afecta a NSS versiones anteriores a 3.58"
    }
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  "lastModified": "2026-06-17T03:07:02.773",
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