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CVE-2026-111166— libmikmod through 3.3.15 Heap Out-of-Bounds Read via IMF_Load

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.

libmikmod 3.3.15 及更早版本中存在一个堆缓冲区外读漏洞，该漏洞位于 IMF_Load() 加载器中。攻击者可以通过构造恶意 IMF 模块，读取已分配内存之外的数据。具体而言，攻击者可以启用线性周期头标志（linear-period header flag），并将音符映射到超出范围的样本，从而导致 noteindex 索引远远超出堆分配边界，致使加载该文件的应用程序崩溃。

CVSS 5.5 · Medium

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProduct Version RangeStatus
sezero libmikmod ≤ 3.3.15 affected
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I. Basic Information for CVE-2026-111166

Vulnerability Information
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Vulnerability Title
libmikmod through 3.3.15 Heap Out-of-Bounds Read via IMF_Load
Source: CVE Program / CVE List V5
Vulnerability Description
libmikmod through 3.3.15 contains a heap out-of-bounds read vulnerability in the IMF_Load() loader that allows attackers to read beyond allocated memory by supplying a crafted IMF module. Attackers can enable the linear-period header flag and map notes to out-of-range samples, causing noteindex indexing far past the heap allocation and crashing applications that load the file.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
sezero libmikmod 0 ~ 3.3.15 -

II. Public POCs for CVE-2026-111166

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III. Intelligence Information for CVE-2026-111166

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Other References for CVE-2026-111166 (1)

Other References for CVE-2026-111166 (3)

Same Patch Batch · sezero · 2026-10-15 · 5 CVEs total

CVE-2026-111155 6.1 MEDIUM libTiMidity through 0.2.8 Out-of-Bounds Read via SoundFont Loader sndfont.c
CVE-2026-111154 6.1 MEDIUM libTiMidity through 0.2.8 Stack Out-of-Bounds Write via parse_gen in SoundFont Loader
CVE-2026-111156 6.1 MEDIUM libTiMidity through 0.2.8 Out-of-Bounds Access via SoundFont Preset Header
CVE-2026-111165 5.5 MEDIUM libmikmod through 3.3.15 Out-of-Bounds Read in MTM_Load via Channel Count

IV. Related Vulnerabilities

Same product: libmikmod
Same vendor: sezero
Same weakness: CWE-125

V. Comments for CVE-2026-111166

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