CVE-2026-73583 in sblim-sfcb
Summary
by MITRE • 08/13/2026
A flaw was found in sblim-sfcb. A local attacker with access to the system can exploit an unsafe deserialization vulnerability in the provider-manager's inter-process communication (IPC) message parsing. By sending a specially crafted message, the attacker can cause out-of-bounds memory access, leading to the termination of the provider-manager process and a denial of service. This could also potentially result in limited unintended information disclosure.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 08/13/2026
The vulnerability identified in sblim-sfcb represents a critical unsafe deserialization flaw that undermines the security posture of systems relying on this software implementation. This issue resides within the provider-manager's inter-process communication mechanism, where the application fails to properly validate and sanitize incoming messages before processing them. The vulnerability stems from inadequate input validation procedures that allow maliciously crafted IPC messages to bypass normal parsing constraints, creating a pathway for exploitation.
The technical execution of this vulnerability involves a local attacker who already possesses system access to leverage the unsafe deserialization pattern. When the provider-manager receives a specially constructed message through its IPC channel, the application's message parsing routine fails to properly handle malformed data structures, resulting in out-of-bounds memory access conditions. This memory corruption directly leads to process termination and subsequent denial of service for legitimate system operations.
From an operational impact perspective, this vulnerability creates significant disruption potential within enterprise environments where sblim-sfcb is deployed. The denial of service condition affects the provider-manager process which likely serves critical system management functions, potentially compromising the availability of configuration management services. Additionally, the potential for limited unintended information disclosure adds another layer of risk, as attackers might extract sensitive data through careful manipulation of the deserialization process.
The vulnerability aligns with CWE-502 which specifically addresses unsafe deserialization issues in software implementations. This classification indicates that the flaw involves the deserialization of untrusted data without proper validation mechanisms, creating opportunities for arbitrary code execution or system compromise. From an attacker's methodology standpoint, this vulnerability maps to ATT&CK technique T1059.007 for command and scripting interpreter and potentially T1498 for network denial of service, as the exploitation directly targets process availability.
Mitigation strategies should prioritize immediate patch deployment from the software vendor to address the deserialization validation gaps in the IPC message handling code. System administrators should implement additional monitoring around the provider-manager process to detect abnormal termination patterns that might indicate exploitation attempts. Network segmentation and privilege separation can help limit the impact of successful exploitation by restricting local access permissions. The implementation of input sanitization routines and proper error handling within the IPC message parsing component would address the root cause while maintaining system functionality for legitimate operations.