CVE-2026-24465
📋 TL;DR
A stack-based buffer overflow vulnerability in ELECOM wireless LAN access point devices allows remote attackers to execute arbitrary code by sending specially crafted packets. This affects organizations using vulnerable ELECOM access points, potentially leading to complete device compromise and network infiltration.
💻 Affected Systems
- ELECOM wireless LAN access point devices
⚠️ Risk & Real-World Impact
Worst Case
Full device takeover leading to persistent backdoor installation, credential theft, lateral movement within the network, and data exfiltration.
Likely Case
Device compromise allowing attacker to intercept network traffic, modify device configuration, and use the device as a pivot point for further attacks.
If Mitigated
Limited impact with proper network segmentation and access controls preventing exploitation attempts from reaching vulnerable devices.
🎯 Exploit Status
Buffer overflow vulnerabilities in network services typically have low exploitation complexity once the vulnerability details are understood.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisories for specific firmware versions
Vendor Advisory: https://www.elecom.co.jp/news/security/20260203-01/
Restart Required: Yes
Instructions:
1. Identify affected ELECOM access point models. 2. Visit ELECOM security advisories. 3. Download latest firmware for your model. 4. Apply firmware update through device management interface. 5. Reboot device to complete installation.
🔧 Temporary Workarounds
Network Segmentation
allIsolate vulnerable access points from critical network segments using VLANs or firewall rules
Access Control Lists
allImplement strict network ACLs to limit which IP addresses can communicate with access point management interfaces
🧯 If You Can't Patch
- Replace vulnerable devices with patched or alternative models
- Implement strict network monitoring and anomaly detection for suspicious traffic to access points
🔍 How to Verify
Check if Vulnerable:
Check device model and firmware version against vendor advisory. Access device web interface or CLI to view current firmware version.Check Version:
Device-specific: Typically through web interface at http://[device-ip] or via SSH/Telnet console commandsVerify Fix Applied:
Confirm firmware version matches or exceeds patched version listed in vendor advisory. Test device functionality remains normal.📡 Detection & Monitoring
Log Indicators:
- Unusual packet patterns to access point management interface
- Device reboot events
- Configuration changes not initiated by administrators
Network Indicators:
- Malformed packets targeting access point management ports
- Unusual outbound connections from access points
- Traffic patterns suggesting device compromise
SIEM Query:
source_ip IN (access_point_ips) AND (packet_size > threshold OR protocol_anomaly = true)