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CVE-2026-110876— AdPlug through 2.4 Out-of-Bounds Read via CxsmPlayer::play_note in XSM Files

Quick assessment

Affected
adplug adplug
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.

AdPlug 2.4 及之前版本在 src/xsm.cpp 中存在一个越界读取漏洞，攻击者通过提供负的音符索引，可以在 note_table 之前读取数据。攻击者可以构造一个带有 ofTAZ! 签名且 song 字节为 0x80 或更高的 XSM 文件，在播放时触发全局缓冲区溢出读取，从而导致受影响的程序崩溃。

CVSS 5.5 · Medium EPSS 0.13% · P2

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProduct Version RangeStatus
adplug adplug ≤ 2.4 affected
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I. Basic Information for CVE-2026-110876

Vulnerability Information
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Vulnerability Title
AdPlug through 2.4 Out-of-Bounds Read via CxsmPlayer::play_note in XSM Files
Source: CVE Program / CVE List V5
Vulnerability Description
AdPlug through 2.4 contains an out-of-bounds read vulnerability in src/xsm.cpp that allows attackers to read before note_table by supplying a negative note index. Attackers can craft an XSM file with the ofTAZ! signature and a song byte of 0x80 or higher, causing a global-buffer-overflow read during playback that may crash affected applications.
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
adplug adplug 0 ~ 2.4 -

II. Public POCs for CVE-2026-110876

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III. Intelligence Information for CVE-2026-110876

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Patches & Fixes for CVE-2026-110876 (2)

Vendor Advisories for CVE-2026-110876 (1)

Same Patch Batch · adplug · 2026-10-15 · 3 CVEs total

CVE-2026-110875 6.1 MEDIUM AdPlug through 2.4 Heap Buffer Overflow via CksmPlayer::update in ksm.cpp
CVE-2026-110877 5.5 MEDIUM AdPlug through 2.4 Heap Out-of-Bounds Read via CdmoLoader::load

IV. Related Vulnerabilities

Same product: adplug
Same vendor: adplug
Same weakness: CWE-125

V. Comments for CVE-2026-110876

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