CVE-2025-61478 Overview
CVE-2025-61478 affects the Vanderbilt Industries and Acre Security SPC5300.000 Main Board running firmware version 3.14.1. A physically proximate attacker can send spoofed TCP SYN packets to the device and trigger a denial of service condition. The SPC5300 is an intrusion detection and alarm control panel deployed in commercial and residential security installations, so a successful attack disrupts alarm monitoring and reporting.
Critical Impact
An attacker with local network access to the SPC5300 control panel can render the alarm system unresponsive using spoofed SYN traffic, degrading physical security monitoring.
Affected Products
- Vanderbilt Industries SPC5300.000 Main Board firmware v3.14.1
- Acre Security SPC5300.000 Main Board firmware v3.14.1
- SPC intrusion detection panels using the affected main board revision
Discovery Timeline
- 2026-08-26 - CVE-2025-61478 published to the National Vulnerability Database
- 2026-08-26 - Last updated in NVD database
Technical Details for CVE-2025-61478
Vulnerability Analysis
The vulnerability is a network-layer denial of service triggered by spoofed TCP SYN packets sent to the SPC5300 Main Board. An attacker with physical proximity to the device network delivers crafted SYN segments that the panel's TCP/IP stack cannot process reliably. The result is exhaustion of connection state or protocol handling capacity on the embedded controller.
Because the SPC5300 acts as an alarm control panel, loss of availability directly impacts intrusion detection, event reporting to monitoring stations, and remote management. The attack does not require authentication or user interaction. It only requires the attacker to reach the device on an accessible network segment.
The issue aligns with SYN flood and resource exhaustion patterns commonly observed on embedded network stacks that lack SYN cookies, connection rate limiting, or backlog protection.
Root Cause
The root cause is insufficient hardening of the TCP handshake path on the SPC5300 Main Board. The device accepts and processes spoofed SYN packets without adequate validation or rate limiting, allowing connection resources to be consumed faster than they can be released.
Attack Vector
Exploitation requires network reachability to the SPC5300 from a physically proximate position, such as the local LAN segment where the panel is installed. The attacker transmits a stream of TCP SYN packets with spoofed source addresses toward listening ports on the control panel. No credentials, prior access, or user interaction are needed to induce the denial of service.
No verified public exploit code has been released for CVE-2025-61478. Additional technical detail is available in the Sikt registration entry.
Detection Methods for CVE-2025-61478
Indicators of Compromise
- High volume of inbound TCP SYN packets to the SPC5300 management or reporting ports from a single or spoofed set of source IP addresses
- SPC5300 panels becoming unresponsive to the alarm receiver or Central Monitoring Station without a corresponding power or link failure
- Increased half-open TCP connection counts observed at the switch or gateway serving the panel VLAN
Detection Strategies
- Deploy network intrusion detection signatures for TCP SYN flood patterns targeting the SPC panel subnet
- Correlate loss-of-heartbeat events from the alarm monitoring platform with concurrent network anomalies on the panel VLAN
- Baseline normal TCP session counts to the SPC5300 and alert on statistically significant deviations
Monitoring Recommendations
- Enable SPAN or TAP capture on the switch port serving the SPC5300 and forward flow records to a central analytics platform
- Monitor ARP tables and DHCP logs for unauthorized devices appearing on the alarm panel VLAN
- Alert when the SPC5300 stops sending polling or supervision messages to its monitoring receiver
How to Mitigate CVE-2025-61478
Immediate Actions Required
- Place the SPC5300 on a dedicated, isolated VLAN that only permits traffic from the alarm receiver and authorized management hosts
- Restrict physical access to network cabling, switches, and ports connected to the alarm panel
- Contact Vanderbilt Industries or Acre Security support to request an updated firmware release or hardening guidance
Patch Information
No vendor patch reference has been published in the NVD entry for CVE-2025-61478 at the time of publication. Consult the Sikt registration record and Acre Security advisories for firmware updates superseding v3.14.1.
Workarounds
- Enforce Layer 2 protections such as DHCP snooping, dynamic ARP inspection, and port security on switches serving the panel
- Apply access control lists that permit only known monitoring and management IP addresses to reach the SPC5300
- Configure upstream firewalls or switches to rate-limit inbound TCP SYN traffic destined for the alarm panel
- Segment the SPC5300 away from general-purpose corporate and guest networks to reduce attacker proximity
# Example: restrict inbound traffic to the SPC5300 using iptables on an upstream Linux gateway
SPC_IP="10.20.30.40"
RECEIVER_IP="10.20.30.5"
MGMT_IP="10.20.30.10"
iptables -A FORWARD -d $SPC_IP -s $RECEIVER_IP -j ACCEPT
iptables -A FORWARD -d $SPC_IP -s $MGMT_IP -j ACCEPT
iptables -A FORWARD -d $SPC_IP -p tcp --syn -m limit --limit 10/second --limit-burst 20 -j ACCEPT
iptables -A FORWARD -d $SPC_IP -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
