Is CVE-2021-25646 actively exploited?

Yes. CVE-2021-25646 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2021-25646 be exploited remotely?

The attack vector of CVE-2021-25646 has not been classified yet.

What is the CVSS score of CVE-2021-25646?

CVE-2021-25646 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2021-25646

UNKNOWNCISA KEVIN THE WILD

CVE-2021-25646

Published: April 11, 2026

EPSS:93.97%probability of exploitation in 30 daysPercentile:99.9th

Official Description

Apache Druid includes the ability to execute user-provided JavaScript code embedded in various types of requests. This functionality is intended for use in high-trust environments, and is disabled by default. However, in Druid 0.20.0 and earlier, it is possible for an authenticated user to send a specially-crafted request that forces Druid to run user-provided JavaScript code for that request, regardless of server configuration. This can be leveraged to execute code on the target machine with the privileges of the Druid server process.

NVD Source

Technical Analysis

CVE-2021-25646 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2021-25646 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.