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CVE-2026-105839— libmikmod before 3.3.14 Heap Buffer Overflow via OKT Loader OKT_doPBOD

Quick assessment

Affected
sezero libmikmod
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 libmikmod 3.3.14 版本之前，Oktalyzer 加载器中的 OKT_doPBOD() 函数存在整数溢出漏洞。攻击者可通过构造特定的曲目数量，导致堆缓冲区溢出。具体而言，攻击者可以提供一种 OKT 模块文件，其 SLEN 块中的 16 位曲目数量（numtrk）值发生回绕（wrap），从而导致 PBOD 操作写入超出已分配曲目指针的内存区域，可能引发程序崩溃或远程代码执行。

CVSS 7.8 · High
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I. Basic Information for CVE-2026-105839

Vulnerability Information
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Vulnerability Title
libmikmod before 3.3.14 Heap Buffer Overflow via OKT Loader OKT_doPBOD
Source: CVE Program / CVE List V5
Vulnerability Description
libmikmod before 3.3.14 contains an integer overflow in the Oktalyzer loader OKT_doPBOD() that allows attackers to cause heap buffer overflow via crafted track counts. Attackers can supply an OKT module whose SLEN chunk wraps the 16-bit numtrk value, causing PBOD writes past allocated track pointers for crashes or code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
sezero libmikmod 0 ~ 3.3.14 -

II. Public POCs for CVE-2026-105839

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III. Intelligence Information for CVE-2026-105839

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Other References for CVE-2026-105839 (5)

Same Patch Batch · sezero · 2026-10-06 · 3 CVEs total

CVE-2026-105837 7.8 HIGH libmikmod before 3.3.14 Heap Buffer Overflow via DSM Loader Integer Overflow
CVE-2026-105838 5.5 MEDIUM libmikmod before 3.3.14 Heap Out-of-Bounds Read via IT Module Loader

IV. Related Vulnerabilities

Same product: libmikmod
Same vendor: sezero
Same weakness: CWE-190

V. Comments for CVE-2026-105839

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