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CVE-2026-112007— Schism Tracker through 20260524 Heap Out-of-Bounds Write via ULT Loader

Quick assessment

Affected
schismtracker Schism Tracker
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.

截至 2026 年 5 月 24 日，Schism Tracker 存在一个堆越界写入漏洞，位于 文件中的 函数。该漏洞源于未能将单字节样本计数（sample count）限制在 范围内。攻击者可利用精心构造的 模块文件，覆盖乐器指针数组，导致 函数释放由攻击者指定的指针，从而造成应用程序崩溃。

CVSS 6.1 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
schismtracker Schism Tracker ≤ 20260524 affected
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I. Basic Information for CVE-2026-112007

Vulnerability Information
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Vulnerability Title
Schism Tracker through 20260524 Heap Out-of-Bounds Write via ULT Loader
Source: CVE Program / CVE List V5
Vulnerability Description
Schism Tracker through 20260524 contains a heap out-of-bounds write vulnerability in fmt_ult_load_song() in fmt/ult.c that fails to clamp the one-byte sample count to MAX_SAMPLES. Attackers can supply a crafted .ult module that overwrites the instruments pointer array, causing csf_destroy() to free attacker-chosen pointers and crash the application.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
schismtracker Schism Tracker 0 ~ 20260524 -

II. Public POCs for CVE-2026-112007

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-112007

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Patches & Fixes for CVE-2026-112007 (1)

Vendor Advisories for CVE-2026-112007 (1)

Proof of Concept for CVE-2026-112007 (1)

Vendor Pages for CVE-2026-112007 (1)

IV. Related Vulnerabilities

Same weakness: CWE-787

V. Comments for CVE-2026-112007

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