CVE-2026-27753 identifies a security vulnerability in the firmware of the SODOLA SL902-SWTGW124AS device, produced by Shenzhen Hongyavision Technology Co., Ltd. (Sodola Networks). The vulnerability stems from improper restriction of excessive authentication attempts (CWE-307), allowing remote attackers to bypass authentication protections by performing unlimited login attempts against the device's management interface. Specifically, the firmware versions up to 200.1.20 lack mechanisms such as account lockout, rate limiting, or other throttling controls that would normally prevent brute-force password guessing attacks. This absence enables attackers to systematically try multiple password combinations without penalty, increasing the likelihood of gaining unauthorized access. The vulnerability requires no prior authentication or user interaction and can be exploited remotely over the network, making it accessible to a wide range of attackers. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and limited confidentiality and integrity impact (VC:L, VI:L) with no availability impact. Although no public exploits have been reported, the vulnerability poses a significant risk to the confidentiality and integrity of device management functions, potentially allowing attackers to alter configurations, disrupt network operations, or pivot into internal networks. The lack of patch links suggests that a fix may not yet be publicly available, underscoring the need for proactive mitigation.

The vulnerability could lead to unauthorized access to the management interface of the SODOLA SL902-SWTGW124AS device, compromising device confidentiality and integrity. Attackers gaining control over the device management interface could alter configurations, disable security controls, or disrupt network traffic, potentially causing operational outages or facilitating further attacks within the network. Since the device likely serves as a network gateway or security appliance, its compromise could have cascading effects on the broader network infrastructure. The absence of rate limiting or lockout mechanisms makes brute-force attacks feasible, increasing the risk of credential compromise. Organizations relying on this device may face increased risk of data breaches, network downtime, and loss of control over critical network components. The medium CVSS score reflects moderate severity but does not diminish the potential operational impact, especially in sensitive or critical infrastructure environments.

Organizations should immediately implement compensating controls such as network-level access restrictions to the management interface, limiting access to trusted IP addresses or VPNs. Deploy intrusion detection and prevention systems (IDS/IPS) to monitor and block suspicious login attempts or brute-force activity targeting the device. Enforce strong password policies and consider multi-factor authentication if supported by the device or network architecture. Regularly audit device logs for unusual authentication patterns. If possible, isolate the management interface on a separate management VLAN or network segment to reduce exposure. Engage with the vendor to obtain firmware updates or patches addressing this vulnerability and apply them promptly once available. In the interim, consider disabling remote management or restricting it to secure channels. Conduct penetration testing to verify the effectiveness of applied mitigations and ensure no other related vulnerabilities exist.