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AlienVault OTX Vulnerabilities

AlienVault OTX Malware

quickjs

A vulnerability was determined in quickjs-ng quickjs up to 0.11.0. This vulnerability affects the function js_typed_array_constructor of the file quickjs.c. Executing a manipulation can lead to heap-based buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. This patch is called c5d80831e51e48a83eab16ea867be87f091783c5. A patch should be applied to remediate this issue.

CVE-2026-0821 identifies a heap-based buffer overflow vulnerability in the quickjs-ng quickjs JavaScript engine, specifically in the js_typed_array_constructor function located in quickjs.c. This vulnerability affects all versions up to and including 0.11.0. The flaw arises when manipulated input leads to improper handling of typed array construction, causing a buffer overflow on the heap. This memory corruption can be exploited remotely without any authentication or user interaction, making it a significant risk for exposed systems. The vulnerability could allow attackers to execute arbitrary code, crash the application, or cause denial of service, depending on the exploitation context. The CVSS 4.0 base score is 6.9, reflecting medium severity with network attack vector, low attack complexity, and no privileges or user interaction required. The vulnerability was publicly disclosed on January 10, 2026, and a patch identified by commit c5d80831e51e48a83eab16ea867be87f091783c5 has been released to address the issue. No known exploits are currently reported in the wild, but public disclosure increases the risk of exploitation attempts. Quickjs is often embedded in IoT devices, software applications, and other environments requiring lightweight JavaScript engines, broadening the scope of potentially affected systems.

Detailed information about CVE-2026-0821: Heap-based Buffer Overflow in quickjs-ng quickjs affecting quickjs-ng quickjs. Get real-time updates, technical detail

CVE-2026-0821: Heap-based Buffer Overflow in quickjs-ng quickjs - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2026-0821: Heap-based Buffer Overflow in quickjs-ng quickjs

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