CVE-2025-46582
📋 TL;DR
A low-privileged user can bypass authorization checks in ZTE's ZXMP M721 product to view the device's communication private key. This exposes cryptographic keys that secure communications, potentially allowing attackers to decrypt or impersonate legitimate traffic. Organizations using affected ZXMP M721 devices are at risk.
💻 Affected Systems
- ZTE ZXMP M721
⚠️ 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
Attackers gain full access to encrypted communications, enabling man-in-the-middle attacks, data interception, and impersonation of legitimate devices across the network.
Likely Case
Internal malicious actors or compromised low-privileged accounts steal private keys, leading to unauthorized access to sensitive communications and potential lateral movement.
If Mitigated
With proper network segmentation and monitoring, impact is limited to isolated segments, though key compromise still requires key rotation and investigation.
🎯 Exploit Status
Exploitation requires low-privileged user access; authorization bypass suggests straightforward attack path once initial access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in reference; check vendor advisory for exact version
Vendor Advisory: https://support.zte.com.cn/zte-iccp-isupport-webui/bulletin/detail/2594779029512220847
Restart Required: Yes
Instructions:
1. Access ZTE support portal using provided URL. 2. Download and apply the security patch for ZXMP M721. 3. Restart the device to activate changes. 4. Verify patch installation via version check.
🔧 Temporary Workarounds
Restrict Low-Privileged User Access
allDisable or remove unnecessary low-privileged user accounts to prevent exploitation.
Specific commands depend on device CLI; consult ZTE documentation for user management commands.
Network Segmentation
allIsolate ZXMP M721 devices in separate network segments to limit lateral movement if keys are compromised.
Configure firewall rules to restrict access to ZXMP M721 management interfaces.
🧯 If You Can't Patch
- Monitor for unusual access patterns to device management interfaces and review logs for authorization bypass attempts.
- Rotate all cryptographic keys stored on the device and implement strict access controls to limit exposure.
🔍 How to Verify
Check if Vulnerable:
Check if low-privileged users can access private key files or management interfaces beyond their permissions; test authorization controls.Check Version:
Use device CLI command 'show version' or similar to confirm updated firmware version matches vendor patch notes.Verify Fix Applied:
After patching, verify that low-privileged users can no longer access private keys and authorization checks are enforced.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to key storage areas
- Log entries showing low-privileged users accessing restricted functions
Network Indicators:
- Unusual traffic patterns from ZXMP M721 devices suggesting key compromise
- Suspicious connections to key management ports
SIEM Query:
source="ZXMP_M721" AND (event_type="authorization_failure" OR event_type="key_access")