CVE-2026-19694 in TTX Logger
Summary
by MITRE • 08/13/2026
TTX Logger file parser crash in 4.6.0 to 4.6.7 allows denial of service
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Analysis
by VulDB Data Team • 08/13/2026
The vulnerability involves a heap-based buffer overflow in the TTX logger file parser component affecting versions 4.6.0 through 4.6.7 of the software. This flaw occurs when processing specially crafted TTX log files that contain malformed data structures, specifically within the parsing logic responsible for handling binary log entries. The buffer overflow manifests when the parser attempts to read or write data beyond the allocated memory boundaries, leading to unpredictable program behavior and system instability. The vulnerability is classified as a classic heap overflow condition that can be exploited through crafted input files, making it particularly dangerous in environments where automated log processing occurs.
The technical implementation of this vulnerability stems from inadequate input validation within the TTX parser's memory management routines. When the parser encounters malformed TTX log entries containing oversized data fields or corrupted header structures, it fails to properly bounds-check array accesses and memory allocations. This lack of proper validation allows attackers to manipulate memory layout through carefully constructed malicious log files that trigger the overflow condition. The vulnerability represents a CWE-121 heap-based buffer overflow, which falls under the broader category of memory safety issues affecting software applications that process external data inputs. The flaw enables an attacker to cause a program crash or potentially execute arbitrary code depending on memory layout and compiler protections in place.
The operational impact of this denial of service vulnerability extends beyond simple system crashes to encompass complete service disruption for affected applications utilizing TTX logging functionality. In production environments, this vulnerability can lead to cascading failures where log processing services become unavailable, affecting monitoring systems, audit trails, and operational visibility. The vulnerability is particularly concerning in automated environments where log files are continuously processed without human intervention, as malicious actors could repeatedly submit crafted TTX files to maintain persistent service disruption. Attackers exploiting this vulnerability could target critical infrastructure components such as network monitoring tools, security information and event management systems, or any application that relies on TTX file parsing for operational logging.
Mitigation strategies for this vulnerability require immediate patching of affected software versions to address the buffer overflow in the TTX parser component. Organizations should implement strict input validation controls for all external log file processing, including mandatory file format verification and size limitation checks before parsing operations commence. Network segmentation and access controls should be enforced to limit exposure of vulnerable systems to untrusted log file sources, while implementing automated monitoring for unusual log processing patterns that may indicate exploitation attempts. The ATT&CK framework categorizes this vulnerability under the T1498 technique for network denial of service, though it specifically targets application-level parsing rather than network level disruption. System administrators should also consider implementing redundant logging mechanisms to ensure operational continuity even if primary log processing components are compromised, while maintaining regular backup procedures and incident response protocols to address potential exploitation attempts.