CVE-2026-129264 in sox_ng
Summary
by MITRE • 11/14/2026
A security vulnerability has been detected in sox_ng up to 14.8.1. Affected by this issue is the function read_samples_voc of the file src/voc.c of the component VOC Decoder. Such manipulation leads to out-of-bounds write. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The name of the patch is 0b40408b. A patch should be applied to remediate this issue. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
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Analysis
by VulDB Data Team • 11/14/2026
The vulnerability identified within sox_ng versions up through 14.8.1 represents a critical memory safety failure located specifically within the VOC Decoder component. This flaw resides in the read_samples_voc function found in the source file src/voc.c and is classified as an out-of-bounds write, which corresponds to CWE-787 in the Common Weakness Enumeration taxonomy. Out-of-bounds writes are among the most dangerous classes of memory corruption vulnerabilities because they allow an attacker to overwrite adjacent memory locations with arbitrary data. In the context of a decoder processing external input, this typically means that malformed or specially crafted audio files can trigger buffer overflows that corrupt heap metadata, stack variables, or other critical program structures. The presence of such a flaw indicates insufficient validation of input length and bounds checking during the sample reading process, allowing maliciously constructed data to exceed the allocated memory boundaries for the target buffer.
From an operational perspective, this vulnerability poses a severe risk due to its remote exploitability. An attacker does not need physical access or prior authentication on the target system; instead, they can deliver the malicious payload through network services that utilize sox_ng to process audio files. The fact that the exploit has been disclosed publicly significantly elevates the threat landscape. Publicly available exploits lower the barrier to entry for attackers who may lack sophisticated development skills but possess a desire to compromise systems running vulnerable versions of this software. Successful exploitation can lead to arbitrary code execution, allowing an attacker to gain full control over the affected system, install malware, exfiltrate sensitive data, or use the compromised machine as part of a larger botnet. The impact extends beyond immediate confidentiality and integrity breaches to include potential denial of service if the memory corruption causes the application to crash unexpectedly.
The remediation strategy involves applying patch 0b40408b provided by the vendor. This update addresses the underlying logic error in read_samples_voc by implementing proper bounds checking before writing sample data into buffers. It is imperative for system administrators and developers to verify that all instances of sox_ng are updated to a version newer than 14.8.1 immediately upon availability. Given the public disclosure status, proactive monitoring for exploitation attempts should be implemented in intrusion detection systems by looking for patterns associated with malformed VOC file headers or unusual memory access violations within application logs. The vendor demonstrated responsible disclosure practices by responding professionally and releasing the fix promptly after being contacted early, which is a positive indicator of their security posture but does not negate the urgency required from users to mitigate exposure.
In terms of broader industry standards, this vulnerability aligns with ATT&CK techniques related to initial access via exploited application components and defense evasion through memory corruption artifacts. Security teams should review their attack surface for any services that accept user-uploaded audio files processed by sox_ng and consider implementing strict file type validation at the network perimeter before the data reaches the vulnerable decoder component. Additionally, enabling compiler protections such as stack canaries, Address Space Layout Randomization (ASLR), and Data Execution Prevention (DEP) can provide additional layers of defense that may mitigate the impact of exploitation even if the underlying code flaw is not immediately patched in legacy systems. Continuous integration pipelines should also be configured to flag any regression or reintroduction of similar memory safety issues during future development cycles, ensuring long-term resilience against CWE-787 type vulnerabilities.