Is CVE-2021-35493 actively exploited?

No active exploitation of CVE-2021-35493 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-35493 be exploited remotely?

Yes. CVE-2021-35493 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-35493?

CVE-2021-35493 has a CVSS score of 5.4 (MEDIUM).

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MEDIUM

CVE-2021-35493

CWE-79Published: September 14, 2021· Updated: Jun 17, 2026

5.4

CVSS v3.1

Official Description

The WebFOCUS Reporting Server and WebFOCUS Client components of TIBCO Software Inc.'s TIBCO WebFOCUS Client, TIBCO WebFOCUS Installer, and TIBCO WebFOCUS Reporting Server contain easily exploitable Stored and Reflected Cross Site Scripting (XSS) vulnerabilities that allow a low privileged attacker to social engineer a legitimate user with network access to execute scripts targeting the affected system or the victim's local system. A successful attack using this vulnerability requires human interaction from a person other than the attacker. Affected releases are TIBCO Software Inc.'s TIBCO WebFOCUS Client: versions 8207.27.0 and below, TIBCO WebFOCUS Installer: versions 8207.27.0 and below, and TIBCO WebFOCUS Reporting Server: versions 8207.27.0 and below.

NVD Source

Technical Analysis

CVE-2021-35493 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

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

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.