Is CVE-2021-28818 actively exploited?

No active exploitation of CVE-2021-28818 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-28818 be exploited remotely?

No. CVE-2021-28818 requires local access to exploit.

What is the CVSS score of CVE-2021-28818?

CVE-2021-28818 has a CVSS score of 7.8 (HIGH).

HOME VULNERABILITIESCVE-2021-28818

HIGH

CVE-2021-28818

NVD-CWE-noinfoPublished: March 23, 2021· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official Description

The Rendezvous Routing Daemon (rvrd), Rendezvous Secure Routing Daemon (rvrsd), Rendezvous Secure Daemon (rvsd), Rendezvous Cache (rvcache), Rendezvous Secure C API, Rendezvous Java API, and Rendezvous .Net API components of TIBCO Software Inc.'s TIBCO Rendezvous and TIBCO Rendezvous Developer Edition contain a vulnerability that theoretically allows a low privileged attacker with local access on the Windows operating system to insert malicious software. The affected component can be abused to execute the malicious software inserted by the attacker with the elevated privileges of the component. This vulnerability results from the affected component searching for run-time artifacts outside of the installation hierarchy. Affected releases are TIBCO Software Inc.'s TIBCO Rendezvous: versions 8.5.1 and below and TIBCO Rendezvous Developer Edition: versions 8.5.1 and below.

NVD Source

Technical Analysis

CVE-2021-28818 requires local access, meaning attackers must already have a foothold on the target system.

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

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.