CVE-2026-24714
📋 TL;DR
CVE-2026-24714 allows attackers to activate telnet service on end-of-service NETGEAR devices by sending a specially crafted 'magic packet' to the TelnetEnable functionality. This affects users of NETGEAR products that have reached end-of-service status and still have this feature enabled. The vulnerability provides unauthorized access to network devices.
💻 Affected Systems
- Various NETGEAR products at end-of-service
⚠️ 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
Full device compromise allowing attackers to reconfigure network settings, intercept traffic, install malware, or use the device as a pivot point to attack other internal systems.
Likely Case
Unauthorized access to device configuration, enabling network reconnaissance, credential harvesting, and potential man-in-the-middle attacks.
If Mitigated
Limited impact if telnet service is already disabled or devices are properly segmented from untrusted networks.
🎯 Exploit Status
Exploitation requires sending a specific packet to trigger telnet activation, which is well-documented in security advisories.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: N/A
Vendor Advisory: https://www.netgear.com/about/eos/
Restart Required: No
Instructions:
No official patch available as these are end-of-service products. Replace affected devices with supported models.
🔧 Temporary Workarounds
Disable Telnet Service
allManually disable telnet service on affected devices if the interface allows it
telnet_disable
no telnet enable
Network Segmentation
allIsolate affected devices in separate VLANs with strict access controls
🧯 If You Can't Patch
- Replace affected end-of-service devices with supported models
- Implement strict network segmentation and firewall rules to block telnet traffic (TCP port 23)
🔍 How to Verify
Check if Vulnerable:
Check if device is listed in NETGEAR's end-of-service products list and test if telnet can be activated via magic packetCheck Version:
show version (device-specific)Verify Fix Applied:
Verify telnet service cannot be activated by sending the magic packet and confirm device replacement📡 Detection & Monitoring
Log Indicators:
- Unexpected telnet service activation
- TelnetEnable packet reception
- Unauthorized telnet login attempts
Network Indicators:
- Telnet traffic (TCP/23) from devices where it should be disabled
- Magic packet patterns targeting TelnetEnable
SIEM Query:
source_port=23 OR dest_port=23 AND (device_type="NETGEAR" OR device_status="EOS")