CVE-2026-94493 Overview
CVE-2026-94493 is a missing authentication vulnerability in the Gigatech PDV5701 device running firmware version 1.0.31_240305_112640. The flaw resides in the WebSocket Service component and is triggered through unknown processing of the /index.html endpoint. An unauthenticated remote attacker can reach the affected functionality over the network without user interaction. Public exploit details are available, increasing the risk of opportunistic attacks. The vendor was contacted before disclosure but did not respond, meaning no official fix has been published at the time of writing.
Critical Impact
Unauthenticated remote attackers can interact with the WebSocket Service on affected Gigatech PDV5701 devices, compromising confidentiality, integrity, and availability of the device and connected systems.
Affected Products
- Gigatech PDV5701 firmware 1.0.31_240305_112640
- WebSocket Service component exposed via /index.html
- Deployments where the device management interface is reachable over the network
Discovery Timeline
- 2026-09-22 - CVE-2026-94493 published to NVD
- 2026-09-22 - Last updated in NVD database
Technical Details for CVE-2026-94493
Vulnerability Analysis
The vulnerability is classified as Missing Authentication for Critical Function [CWE-287]. The WebSocket Service exposed by the Gigatech PDV5701 device accepts requests handled through /index.html without verifying the identity of the caller. Because authentication is absent, any client that can reach the service over the network can invoke functionality that should be restricted to authorized administrators. The flaw is exploitable remotely with low attack complexity and requires no privileges or user interaction. Public exploit information is referenced through third-party vulnerability databases, which raises the likelihood of active abuse against exposed devices.
Root Cause
The root cause is the absence of authentication checks on the WebSocket Service handling requests tied to /index.html. Sensitive device operations are exposed to any network-reachable client, which violates the principle of least privilege and CWE-287 guidance requiring authentication for critical functions.
Attack Vector
An attacker sends crafted WebSocket requests over the network to the vulnerable endpoint on the PDV5701 device. Because no credentials are validated, the attacker can invoke functions that impact confidentiality, integrity, and availability of the device and any subsystem it controls. See the VulDB CVE Details and GitHub Issue Discussion for additional technical context.
No verified proof-of-concept code is included here. Refer to the referenced advisories for exploitation details.
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Stop Identity AttacksDetection Methods for CVE-2026-94493
Indicators of Compromise
- Unexpected WebSocket connections to the PDV5701 device targeting /index.html from unknown or external source addresses.
- Configuration or state changes on the device that do not correlate with authenticated administrator sessions.
- Outbound network traffic from the device to unfamiliar destinations following inbound WebSocket activity.
Detection Strategies
- Inspect network traffic for WebSocket handshake requests (Upgrade: websocket) targeting the device management interface from non-administrative hosts.
- Alert on any HTTP or WebSocket sessions to the device that do not originate from the approved management VLAN.
- Correlate device event logs with network flow data to identify remote requests that lack an associated authenticated user session.
Monitoring Recommendations
- Enable full packet capture on network segments that host PDV5701 devices to preserve forensic evidence of exploitation attempts.
- Forward device access logs and network flow telemetry to a centralized SIEM or data lake for continuous review.
- Baseline normal WebSocket usage patterns for the device and alert on statistical deviations in connection frequency or source diversity.
How to Mitigate CVE-2026-94493
Immediate Actions Required
- Remove the PDV5701 device from any network segment reachable from untrusted sources, including the public internet.
- Restrict access to the device management interface using firewall rules that allow only known administrator workstations.
- Monitor the VulDB Vulnerability Information page for updated vendor guidance or third-party patches.
Patch Information
No vendor patch is available. According to the disclosure, Gigatech was contacted about the vulnerability but did not respond. Organizations operating the affected firmware 1.0.31_240305_112640 should treat the device as unpatched and apply compensating network controls until the vendor releases a fix.
Workarounds
- Place affected devices behind a network segmentation boundary that blocks inbound WebSocket traffic from untrusted zones.
- Terminate access to the device behind an authenticating reverse proxy that enforces credential validation before requests reach /index.html.
- Disable the WebSocket Service if the deployment does not require remote management functionality provided through this interface.
- Rotate any credentials or secrets that may have been accessible through the device following suspected exposure.
# Example firewall rule restricting WebSocket access to a management subnet
iptables -A INPUT -p tcp --dport 80 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
