Is CVE-2021-21389 actively exploited?

Yes. CVE-2021-21389 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2021-21389 be exploited remotely?

The attack vector of CVE-2021-21389 has not been classified yet.

What is the CVSS score of CVE-2021-21389?

CVE-2021-21389 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2021-21389

UNKNOWNCISA KEVIN THE WILD

CVE-2021-21389

Published: April 11, 2026

EPSS:93.30%probability of exploitation in 30 daysPercentile:99.8th

Official Description

BuddyPress is an open source WordPress plugin to build a community site. In releases of BuddyPress from 5.0.0 before 7.2.1 it's possible for a non-privileged, regular user to obtain administrator rights by exploiting an issue in the REST API members endpoint. The vulnerability has been fixed in BuddyPress 7.2.1. Existing installations of the plugin should be updated to this version to mitigate the issue.

NVD Source

Technical Analysis

CVE-2021-21389 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-2021-21389 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.