Summary
Apache Hadoop's HDFS native client contains a vulnerability (CVE-2025-27821) that allows attackers to cause system crashes or data corruption through an out-of-bounds write.
Take Action:
If you are using Hadoop HDFS native client, plan an update. The flaw isn't immiediately exploited, so prioritize isolating and limiting who can access the Hadoop cluster using that client. Then plan an update to 3.4.2
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This article was originally published on BeyondMachines
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