Out-of-bounds Write Affecting org.apache.hadoop:hadoop-hdfs-native-client package, versions [3.2.0,3.4.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published27 Jan 2026
- disclosed26 Jan 2026
- creditBUI Ngoc Tan
Introduced: 26 Jan 2026
CVE-2025-27821 (opens in a new tab)How to fix?
Upgrade org.apache.hadoop:hadoop-hdfs-native-client to version 3.4.2 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Write via statically linked code from uriparser2. An attacker can cause memory corruption or denial of service by sending specially crafted requests to the affected process.