Overview Recently, NSFOCUS CERT detected that H2O-3 released a security update to fix the H2O-3 JDBC deserialization vulnerability (CVE-2025-6544); This vulnerability is a bypass of CVE-2025-6507. Due to the system's flawed handling of JDBC connection parameters, an unauthenticated attacker can bypass existing regular expression checks through double URL encoding, thereby...
Category: Blog
NSFOCUS Monthly APT Insights – August 2025
Regional APT Threat Situation In August 2025, the global threat hunting system of Fuying Lab detected a total of 23 APT attack activities. These activities were primarily concentrated in regions including South Asia, East Asia, Eastern Europe, and West Asia, as shown in the following figure. Regarding the activity levels...
Dive into NSFOCUS LLM Security Solution
Overview NSFOCUS LLM security solution consists of two products and services: the LLM security assessment system (AI-SCAN) and the AI unified threat management (AI-UTM), forming a security assessment and protection system covering the entire life cycle of LLM. In the model training and fine-tuning stage, the large language model security...
Microsoft’s September Security Update High-Risk Vulnerability Notice for Multiple Products
Overview On September 10, NSFOCUS CERT detected that Microsoft released the September Security Update patch, fixing 86 security issues involving widely used products such as Windows, Microsoft Office, Azure, and Microsoft SQL Server, including high-risk vulnerability types such as privilege escalation and remote code execution. Among the vulnerabilities fixed by...
H2O-3 JDBC Deserialization Vulnerability (CVE-2025-6507)
Overview Recently, NSFOCUS CERT detected that H2O-3 released a security update to fix the H2O-3 JDBC deserialization vulnerability (CVE-2025-6507); This vulnerability is a bypass of CVE-2024-45758 and CVE-2024-10553. Due to the deserialization flaw in the system's JDBC connection processing logic, an unauthenticated attacker can bypass existing regular expression filtering by...
Gitblit Authentication Bypass Vulnerability (CVE-2024-28080)
Overview Recently, NSFOCUS CERT detected that Gitblit issued a security announcement and fixed the Gitblit authentication bypass vulnerability (CVE-2024-28080); Because Gitblit's SSH service has defects in the public key authentication process, unauthenticated attackers can use the client's public key to trigger signature verification failure and fall back to password-based authentication...
