CVE-2025-27654: Vasion Print XSS Vulnerability

CVE-2025-27654 Overview

CVE-2025-27654 is a Cross-Site Scripting (XSS) vulnerability affecting Vasion Print, formerly known as PrinterLogic. The flaw impacts Virtual Appliance Host versions before 22.0.862 and Application versions before 20.0.2014. Tracked internally as V-2023-017, the issue allows attackers to inject arbitrary script into the web interface. Successful exploitation requires user interaction, such as clicking a crafted link. The vulnerability maps to [CWE-79], improper neutralization of input during web page generation. Public technical details were released by security researcher Pierre Kim in April 2025 as part of a broader disclosure covering 83 vulnerabilities in Vasion Print products.

Critical Impact
Attackers can execute arbitrary JavaScript in the browser context of authenticated users, enabling session theft, credential harvesting, and unauthorized actions against the print management console.

Affected Products

Vasion Print (formerly PrinterLogic) Virtual Appliance Host before 22.0.862
Vasion Print (formerly PrinterLogic) Application before 20.0.2014
PrinterLogic SaaS deployments referencing the same affected components

Discovery Timeline

2025-03-05 - CVE-2025-27654 published to NVD
2025-04-08 - Public technical disclosure by Pierre Kim covering Vasion Print vulnerabilities
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-27654

Vulnerability Analysis

The vulnerability is a reflected or stored Cross-Site Scripting (XSS) issue within the Vasion Print web application. User-controlled input reaches an HTML rendering context without proper output encoding or sanitization. An attacker can craft a payload containing JavaScript that executes in the victim's browser session. Because the scope is changed (S:C in the CVSS vector), the injected script can impact resources beyond the vulnerable component. The confidentiality and integrity impact are limited but sufficient to steal session tokens or manipulate the printer management interface. No authentication is required from the attacker, but a legitimate user must interact with the malicious payload.

Root Cause

The root cause is missing or inadequate input validation and output encoding in a web-exposed component of the Vasion Print Virtual Appliance. Data supplied through HTTP requests is reflected into responses without contextual escaping, allowing HTML and script markup to break out of intended data contexts. This is a classic [CWE-79] weakness documented under the vendor identifier V-2023-017.

Attack Vector

An attacker delivers a crafted URL or content to a Vasion Print user, typically an administrator managing printers or driver deployments. When the victim visits the link or views the injected content, the browser executes attacker-supplied JavaScript within the trusted origin of the print management console. Payloads can exfiltrate cookies, perform CSRF-style actions, or pivot into additional application functionality. The Vasion Print console typically holds privileged session data useful for further attacks on printing infrastructure.

No verified public proof-of-concept code is available. Technical details describing the vulnerable parameters are documented in the Pierre Kim Blog on XSS Vulnerability.

Detection Methods for CVE-2025-27654

Indicators of Compromise

HTTP requests to Vasion Print web endpoints containing <script>, javascript:, onerror=, or encoded variants such as %3Cscript%3E in query parameters or form fields
Outbound browser connections from administrator workstations to attacker-controlled domains shortly after accessing the print console
Unexpected administrative actions in Vasion Print audit logs originating from valid sessions

Detection Strategies

Deploy Web Application Firewall (WAF) rules that identify script-injection patterns targeting Vasion Print URIs
Correlate browser telemetry from EDR agents on administrator endpoints with access to the print management portal
Review Vasion Print application logs for anomalous parameter values containing HTML control characters

Monitoring Recommendations

Alert on Vasion Print Virtual Appliance versions below 22.0.862 and Application versions below 20.0.2014 still present in the environment
Monitor administrator sessions for concurrent logins or geolocation anomalies suggesting stolen session cookies
Ingest reverse proxy and appliance access logs into a central SIEM for retrospective hunting on XSS payload signatures

How to Mitigate CVE-2025-27654

Immediate Actions Required

Upgrade Vasion Print Virtual Appliance Host to version 22.0.862 or later and Application to 20.0.2014 or later
Restrict access to the Vasion Print management interface to administrative networks and VPN users only
Force re-authentication and rotate session tokens for administrators after applying the patch

Patch Information

Vasion has addressed the vulnerability in Virtual Appliance Host 22.0.862 and Application 20.0.2014. Consult the PrinterLogic Security Bulletins for the full advisory and upgrade instructions. Additional context on the broader disclosure is available at Full Disclosure April 2025.

Workarounds

Enforce a strict Content Security Policy (CSP) at the reverse proxy layer to block inline script execution on Vasion Print responses
Require administrators to access the console from hardened, dedicated workstations with browser isolation
Disable or restrict end-user access to features that render user-supplied metadata until the patch is applied

bash

# Example reverse proxy CSP header enforcement (nginx)
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; frame-ancestors 'none'" always;
add_header X-XSS-Protection "1; mode=block" always;
add_header X-Content-Type-Options "nosniff" always;