libcasper(3) communicates with helper processes via UNIX domain sockets, and uses the select(2) system call to wait for data to become available. However, it does not verify that its socket descriptor fits within select(2)'s descriptor set size limit of FD_SETSIZE (1024). An attacker able to cause an application using libcasper(3) to allocate large file descriptors, e.g., by opening many descriptors and executing a program which is not careful to close them upon startup, may trigger stack corruption. If the target application runs with setuid root privileges, this could be used to escalate local privileges.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.8, requiring local system access to exploit with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 1 product from freebsd organizations running these solutions should prioritize assessment and patching.
Reported in 2026, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2026-05-21T10:16:25.320
2026-05-21T19:01:35.583
Analyzed
CVSSv3.1: 8.8 (HIGH)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | freebsd | freebsd | 14.3 | Yes |
| Operating System | freebsd | freebsd | 14.3 | Yes |
| Operating System | freebsd | freebsd | 14.3 | Yes |
| Operating System | freebsd | freebsd | 14.3 | Yes |
| Operating System | freebsd | freebsd | 14.3 | Yes |
| Operating System | freebsd | freebsd | 14.3 | Yes |
| Operating System | freebsd | freebsd | 14.3 | Yes |
| Operating System | freebsd | freebsd | 14.3 | Yes |
| Operating System | freebsd | freebsd | 14.3 | Yes |
| Operating System | freebsd | freebsd | 14.3 | Yes |
| Operating System | freebsd | freebsd | 14.3 | Yes |
| Operating System | freebsd | freebsd | 14.3 | Yes |
| Operating System | freebsd | freebsd | 14.3 | Yes |
| Operating System | freebsd | freebsd | 14.3 | Yes |
| Operating System | freebsd | freebsd | 14.4 | Yes |
| Operating System | freebsd | freebsd | 14.4 | Yes |
| Operating System | freebsd | freebsd | 14.4 | Yes |
| Operating System | freebsd | freebsd | 14.4 | Yes |
| Operating System | freebsd | freebsd | 14.4 | Yes |
| Operating System | freebsd | freebsd | 14.4 | Yes |
| Operating System | freebsd | freebsd | 15.0 | Yes |
| Operating System | freebsd | freebsd | 15.0 | Yes |
| Operating System | freebsd | freebsd | 15.0 | Yes |
| Operating System | freebsd | freebsd | 15.0 | Yes |
| Operating System | freebsd | freebsd | 15.0 | Yes |
| Operating System | freebsd | freebsd | 15.0 | Yes |
| Operating System | freebsd | freebsd | 15.0 | Yes |
| Operating System | freebsd | freebsd | 15.0 | Yes |
| Operating System | freebsd | freebsd | 15.0 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For freebsd's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.