CVE-2025-7702
📋 TL;DR
This CVE describes an open redirect vulnerability in Pusula Communication's Manageable Email Sending System that allows attackers to redirect users to malicious websites by manipulating URLs. The vulnerability affects all versions up to and including 2025.06, before the fixed version 2025.08.06. Attackers can exploit user trust in the legitimate system to facilitate phishing or malware distribution.
💻 Affected Systems
- Pusula Communication Information Internet Industry and Trade Ltd. Co. Manageable Email Sending System
⚠️ 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
Users could be redirected to sophisticated phishing sites that steal credentials or deliver malware, potentially leading to account compromise, data theft, or ransomware infection.
Likely Case
Attackers create convincing phishing campaigns using the legitimate email system's domain, increasing click-through rates for credential harvesting or malware distribution.
If Mitigated
With proper user awareness training and browser security controls, users might recognize suspicious redirects, limiting the attack's effectiveness.
🎯 Exploit Status
Exploitation requires crafting malicious URLs that pass through the system's validation, but no public exploit code is currently available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2025.08.06
Vendor Advisory: https://www.usom.gov.tr/bildirim/tr-25-0274
Restart Required: No
Instructions:
1. Download version 2025.08.06 or later from the vendor. 2. Backup current configuration and data. 3. Install the update following vendor instructions. 4. Verify the update was successful by checking the version number.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side validation to reject URLs with external domains in redirect parameters
URL Whitelisting
allRestrict redirect URLs to a predefined list of trusted internal domains only
🧯 If You Can't Patch
- Implement a web application firewall (WAF) with rules to detect and block open redirect attempts
- Deploy email security gateways that scan for malicious links and warn users about external redirects
🔍 How to Verify
Check if Vulnerable:
Test by appending a redirect parameter with an external URL (e.g., ?redirect=https://evil.com) to system URLs and checking if it redirectsCheck Version:
Check the system's admin interface or configuration files for version informationVerify Fix Applied:
After patching, repeat the vulnerable test - valid redirects should only go to approved internal URLs📡 Detection & Monitoring
Log Indicators:
- Unusual redirect patterns in web server logs
- Multiple requests with external domain parameters
Network Indicators:
- Outbound connections to suspicious domains following system redirects
SIEM Query:
web.url:*redirect=* AND NOT web.url:*redirect=*trusted-domain*