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CVE-2025-27819

Estado: AnalizadaAlta (7.5)—

In CVE-2023-25194, we announced the RCE/Denial of service attack via SASL JAAS JndiLoginModule configuration in Kafka Connect API. But not only Kafka Connect API is vulnerable to this attack, the Apache Kafka brokers also have this vulnerability. To exploit this vulnerability, the attacker needs to be able to connect to the Kafka cluster and have the AlterConfigs permission on the cluster resource.

Since Apache Kafka 3.4.0, we have added a system property ("-Dorg.apache.kafka.disallowed.login.modules") to disable the problematic login modules usage in SASL JAAS configuration.

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Also by default "com.sun.security.auth.module.JndiLoginModule" is disabled in Apache Kafka 3.4.0, and "com.sun.security.auth.module.JndiLoginModule,com.sun.security.auth.module.LdapLoginModule" is disabled by default in in Apache Kafka 3.9.1/4.0.0

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.

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

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software InstallationLimit Access to Resource Over Network

Tecnologías afectadas (1)

Apache — Kafka

CWE

Referencias

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  "id": "CVE-2025-27819",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-27819",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2025-06-10T14:18:03.922208Z"
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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  "affected": [
    {
      "source": "security@apache.org",
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          "vendor": "Apache Software Foundation",
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  "published": "2025-06-10T08:15:22.687",
  "references": [
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      "tags": [
        "Vendor Advisory"
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      "source": "security@apache.org"
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  "weaknesses": [
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      "source": "security@apache.org",
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  "descriptions": [
    {
      "lang": "en",
      "value": "In CVE-2023-25194, we announced the RCE/Denial of service attack via SASL JAAS JndiLoginModule configuration in Kafka Connect API. But not only Kafka Connect API is vulnerable to this attack, the Apache Kafka brokers also have this vulnerability. To exploit this vulnerability, the attacker needs to be able to connect to the Kafka cluster and have the AlterConfigs permission on the cluster resource.\n\n\nSince Apache Kafka 3.4.0, we have added a system property (\"-Dorg.apache.kafka.disallowed.login.modules\") to disable the problematic login modules usage in SASL JAAS configuration. Also by default \"com.sun.security.auth.module.JndiLoginModule\" is disabled in Apache Kafka 3.4.0, and \"com.sun.security.auth.module.JndiLoginModule,com.sun.security.auth.module.LdapLoginModule\" is disabled by default in in Apache Kafka 3.9.1/4.0.0"
    },
    {
      "lang": "es",
      "value": "En CVE-2023-25194, anunciamos un ataque de RCE/denegación de servicio mediante la configuración JndiLoginModule de SASL JAAS en la API de Kafka Connect. Sin embargo, no solo la API de Kafka Connect es vulnerable a este ataque, sino que los brokers de Apache Kafka también presentan esta vulnerabilidad. Para explotar esta vulnerabilidad, el atacante debe poder conectarse al clúster de Kafka y tener el permiso AlterConfigs en el recurso del clúster. A partir de Apache Kafka 3.4.0, hemos añadido una propiedad del sistema (\"-Dorg.apache.kafka.disallowed.login.modules\") para deshabilitar el uso problemático de los módulos de inicio de sesión en la configuración de SASL JAAS. También, de forma predeterminada, \"com.sun.security.auth.module.JndiLoginModule\" está deshabilitado en Apache Kafka 3.4.0, y \"com.sun.security.auth.module.JndiLoginModule,com.sun.security.auth.module.LdapLoginModule\" está deshabilitado de forma predeterminada en Apache Kafka 3.9.1/4.0.0"
    }
  ],
  "lastModified": "2026-06-17T09:04:16.633",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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