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CVE-2026-35554 is a race condition in Apache Kafka's Java producer client buffer-pool management. If a produce batch reaches delivery.timeout.ms while its associated network request remains in flight, the client can prematurely deallocate the batch's ByteBuffer and return it to the shared buffer pool. A later produce batch, including one for a different topic, can reuse and overwrite that buffer before the original request completes. The in-flight request may consequently transmit corrupted or substituted message data to an unintended topic without reporting an error to the producer. Affected kafka-clients versions are 2.8.0 through 3.9.1, 4.0.0 through 4.0.1, and 4.1.0 through 4.1.1.
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An Apache Kafka Clients vulnerability causing information disclosure and data corruption due to a race condition in producer buffer management.
An Apache Kafka Clients vulnerability causing information disclosure and data corruption due to a race condition in producer buffer management.
An Apache Kafka Clients vulnerability causing information disclosure and data corruption due to a race condition in producer buffer management.
A vulnerability in HPE Telco Service Orchestrator prior to v5.6.0 that may result in compromise of system integrity and potentially full system compromise.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.