Is CVE-2026-27508 actively exploited?

No active exploitation of CVE-2026-27508 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-27508 be exploited remotely?

Yes. CVE-2026-27508 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-27508?

CVE-2026-27508 has a CVSS score of 5.4 (MEDIUM).

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MEDIUM

CVE-2026-27508

CWE-79Published: March 30, 2026· Updated: Apr 1, 2026

5.4

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:8.2th

Official Description

Smoothwall Express versions prior to 3.1 Update 13 contain a reflected cross-site scripting vulnerability in the /redirect.cgi endpoint due to improper sanitation of the url parameter. Attackers can craft malicious URLs with javascript: schemes that execute arbitrary JavaScript in victims' browsers when clicked through the unsanitized link.

NVD Source

Technical Analysis

CVE-2026-27508 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

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.