CVE-2026-24427
📋 TL;DR
Tenda AC7 routers expose administrative credentials in plaintext within web management responses, allowing attackers to steal router passwords. The vulnerability also lacks proper cache controls, potentially exposing credentials in browser caches. This affects all users running vulnerable firmware versions.
💻 Affected Systems
- Tenda AC7
⚠️ 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 router compromise leading to network takeover, credential theft, man-in-the-middle attacks, and persistent backdoor access.
Likely Case
Local network attacker steals admin credentials, modifies router settings, intercepts traffic, or installs malicious firmware.
If Mitigated
Limited to internal network attackers; external attackers would need initial access to local network.
🎯 Exploit Status
Exploitation requires network access to router's web interface; no authentication bypass needed once credentials are exposed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None provided
Restart Required: Yes
Instructions:
1. Check Tenda website for firmware updates
2. Download latest firmware for AC7
3. Access router admin panel
4. Navigate to firmware upgrade section
5. Upload new firmware file
6. Wait for router to reboot
🔧 Temporary Workarounds
Disable remote management
allPrevent external access to router web interface
Change admin credentials
allRegular password rotation reduces exposure window
🧯 If You Can't Patch
- Isolate router on separate VLAN with strict access controls
- Implement network monitoring for unauthorized configuration changes
🔍 How to Verify
Check if Vulnerable:
Access router web interface, inspect network responses for plaintext credentials in configuration dataCheck Version:
Login to router admin panel and check firmware version in system statusVerify Fix Applied:
Check firmware version is newer than V03.03.03.01_cn and verify credentials are no longer exposed in responses📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts followed by successful login
- Unusual configuration changes
Network Indicators:
- Unusual HTTP requests to router admin interface
- Traffic patterns suggesting credential harvesting
SIEM Query:
source="router_logs" AND (event="configuration_change" OR event="admin_login")