CVE-2025-48026
📋 TL;DR
An unauthenticated path traversal vulnerability in Mitel OpenScape Xpressions WebApl component allows attackers to read arbitrary files from the underlying operating system. This affects all OpenScape Xpressions installations through version V7R1 FR5 HF43 P913. Organizations using these systems are at risk of sensitive information disclosure.
💻 Affected Systems
- Mitel OpenScape Xpressions
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through reading sensitive configuration files, credentials, or SSH keys leading to lateral movement and data exfiltration.
Likely Case
Unauthenticated attackers reading sensitive configuration files, logs, or system information that could enable further attacks.
If Mitigated
Limited impact with proper network segmentation and access controls preventing external exploitation.
🎯 Exploit Status
Path traversal vulnerabilities typically have low exploitation complexity. No public exploit code has been identified yet.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after V7R1 FR5 HF43 P913
Vendor Advisory: https://www.mitel.com/support/mitel-product-security-advisory-misa-2025-0005
Restart Required: Yes
Instructions:
1. Review Mitel advisory MISA-2025-0005. 2. Apply the latest security patch from Mitel. 3. Restart the OpenScape Xpressions service. 4. Verify the patch is applied successfully.
🔧 Temporary Workarounds
Network Access Restriction
linuxRestrict network access to OpenScape Xpressions WebApl component to trusted IP addresses only.
# Example iptables rule: iptables -A INPUT -p tcp --dport [WEBAPL_PORT] -s [TRUSTED_NETWORK] -j ACCEPT
# iptables -A INPUT -p tcp --dport [WEBAPL_PORT] -j DROP
Web Server Configuration Hardening
allConfigure web server to reject path traversal patterns in URLs.
# Apache: RewriteRule .*\.\./.* - [F]
# Nginx: if ($request_uri ~* "\.\.") { return 403; }
🧯 If You Can't Patch
- Implement strict network segmentation to isolate OpenScape Xpressions from untrusted networks.
- Deploy a web application firewall (WAF) with path traversal protection rules.
🔍 How to Verify
Check if Vulnerable:
Check if your OpenScape Xpressions version is V7R1 FR5 HF43 P913 or earlier via admin interface or version files.Check Version:
Check admin web interface or consult system documentation for version information.Verify Fix Applied:
Verify the installed version is newer than V7R1 FR5 HF43 P913 and test path traversal attempts return proper errors.📡 Detection & Monitoring
Log Indicators:
- Multiple failed attempts to access files with ../ patterns in URL parameters
- Unusual file access patterns from single IP addresses
Network Indicators:
- HTTP requests containing ../ patterns in URL parameters to WebApl endpoints
- Unusual outbound traffic following file access attempts
SIEM Query:
source="webserver.log" AND (url="*../*" OR uri="*../*") AND dest_port="[WEBAPL_PORT]"