CVE-2026-25071: XikeStor SKS8310-8X Auth Bypass Flaw

CVE-2026-25071 Overview

CVE-2026-25071 is a missing authentication vulnerability affecting XikeStor SKS8310-8X Network Switch firmware versions 1.04.B07 and prior. The vulnerability exists in the /switch_config.src endpoint, which allows unauthenticated remote attackers to download device configuration files without any credentials. Attackers exploiting this flaw can retrieve sensitive configuration information including VLAN settings, IP addressing details, and other critical network infrastructure data.

This vulnerability is classified as CWE-306 (Missing Authentication for Critical Function), highlighting a fundamental security design flaw where a sensitive endpoint lacks proper access controls.

Critical Impact

Unauthenticated remote attackers can access and download sensitive network switch configuration files, potentially exposing VLAN configurations, IP addressing schemes, and other network infrastructure details that could facilitate further attacks.

Affected Products

• Seekswan ZikeStor SKS8310-8X Firmware versions 1.04.B07 and prior
• Seekswan ZikeStor SKS8310-8X Hardware
• Network switches running vulnerable firmware versions

Discovery Timeline

• 2026-03-07 - CVE-2026-25071 published to NVD
• 2026-03-12 - Last updated in NVD database

Technical Details for CVE-2026-25071

Vulnerability Analysis

This vulnerability represents a critical authentication bypass flaw in the XikeStor SKS8310-8X network switch's web management interface. The /switch_config.src endpoint fails to implement any form of authentication verification before serving configuration file downloads. This design flaw allows any network-accessible attacker to retrieve the switch's complete configuration without providing valid credentials.

The attack requires network access to the switch's management interface but has no other prerequisites—no user interaction, no prior authentication, and no elevated privileges are needed. An attacker can simply make a direct HTTP request to the vulnerable endpoint to retrieve configuration data.

The impact is primarily focused on confidentiality breach, where attackers gain access to sensitive network infrastructure information. This information disclosure could serve as reconnaissance for more sophisticated attacks against the network infrastructure.

Root Cause

The root cause of CVE-2026-25071 is the complete absence of authentication checks in the /switch_config.src endpoint handler. The firmware developers failed to implement access control mechanisms that would verify user identity before serving sensitive configuration data. This represents a violation of the principle of least privilege and secure-by-default design patterns.

The vulnerability falls under CWE-306 (Missing Authentication for Critical Function), indicating that a critical function—configuration file access—was deployed without requiring users to prove their identity.

Attack Vector

The attack vector for this vulnerability is network-based, requiring the attacker to have network connectivity to the switch's management interface. The attack can be executed remotely without any user interaction or special privileges.

An attacker would need to:

1. Identify a vulnerable XikeStor SKS8310-8X switch on the network
2. Send an HTTP request to the /switch_config.src endpoint
3. Receive the configuration file in the response containing VLAN settings, IP addressing, and other sensitive network configuration details

The simplicity of exploitation makes this vulnerability particularly dangerous for organizations that expose switch management interfaces to untrusted networks or have insufficient network segmentation.

Detection Methods for CVE-2026-25071

Indicators of Compromise

• Unexpected HTTP requests to /switch_config.src endpoint on network switches
• Configuration file access logs showing requests from unauthorized IP addresses
• Network reconnaissance activity targeting switch management interfaces
• Anomalous traffic patterns directed at switch management ports (typically HTTP/HTTPS)

Detection Strategies

• Monitor web server access logs on affected switches for requests to /switch_config.src
• Implement network-based intrusion detection rules for HTTP requests targeting the vulnerable endpoint
• Deploy honeypot detection for management interface probing attempts
• Review firewall logs for unauthorized access attempts to switch management ports

Monitoring Recommendations

• Enable comprehensive logging on all network switch management interfaces
• Configure SIEM alerts for access patterns matching exploitation attempts
• Implement network traffic analysis to detect configuration file exfiltration
• Establish baseline monitoring for normal management interface access patterns

How to Mitigate CVE-2026-25071

Immediate Actions Required

• Restrict network access to switch management interfaces using firewall rules or ACLs
• Implement network segmentation to isolate management interfaces from untrusted networks
• Enable VPN-only access for remote switch management
• Conduct an audit of existing switch configurations for sensitive data exposure
• Monitor for signs of exploitation using the detection strategies outlined above

Patch Information

At the time of publication, vendor patch information is not available in official advisories. Organizations should monitor Seekswan communications for firmware updates addressing this vulnerability. For additional device information, refer to the OpenWrt Device Overview for community-maintained documentation.

Contact Seekswan support directly for the latest firmware versions and security patches. Until a patch is available, implement the workarounds below to reduce exposure.

Workarounds

• Place switch management interfaces on isolated management VLANs inaccessible from general network segments
• Implement firewall rules to allow management access only from authorized administrator IP addresses
• Consider deploying a reverse proxy with authentication in front of the management interface
• Disable HTTP/HTTPS management access if not required and use console or SSH management instead
• Evaluate replacement with alternative firmware such as OpenWrt if supported and appropriate for your environment

# Example ACL configuration to restrict management access (adjust for your environment)
# Allow management access only from trusted admin subnet
access-list 100 permit tcp 10.0.100.0 0.0.0.255 any eq 80
access-list 100 permit tcp 10.0.100.0 0.0.0.255 any eq 443
access-list 100 deny tcp any any eq 80
access-list 100 deny tcp any any eq 443

# Apply to management interface
interface vlan1
 ip access-group 100 in