CVE-2025-27819

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. 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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://kafka.apache.org/cve-list	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:kafka:*:*:*:*:*:*:*:*

History

11 Jul 2025, 16:52

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-06-10 08:15

Updated : 2025-07-11 16:52

NVD link : CVE-2025-27819

Mitre link : CVE-2025-27819

CVE.ORG link : CVE-2025-27819

JSON object : View

Products Affected

apache

kafka

CWE

CWE-502

Deserialization of Untrusted Data

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