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CVE-2026-112281— libaribb24 through 1.0.3 Stack Buffer Overflow via decoder_handle_csi

Quick assessment

Affected
nkoriyama aribb24
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.

libaribb24（aribb24）1.0.3 及更早版本在 src/decoder.c 的 decoder_handle_csi() 函数中存在基于栈的缓冲区溢出漏洞。攻击者可通过提供无限制的 CSI 参数字节，向固定大小的 256 元素数组之外写入数据。攻击者可在媒体文件或广播流中嵌入包含 CSI 引入符及超过 256 个参数字节的字幕语句，从而导致 FFmpeg 或 VLC 崩溃，或破坏返回地址。

CVSS 6.1 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
nkoriyama aribb24 ≤ 1.0.3 affected
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I. Basic Information for CVE-2026-112281

Vulnerability Information
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Vulnerability Title
libaribb24 through 1.0.3 Stack Buffer Overflow via decoder_handle_csi
Source: CVE Program / CVE List V5
Vulnerability Description
libaribb24 (aribb24) through 1.0.3 contains a stack-based buffer overflow vulnerability in decoder_handle_csi() in src/decoder.c that allows attackers to write past a fixed 256-entry array by supplying unbounded CSI parameter bytes. Attackers can embed a caption statement with a CSI introducer and over 256 parameter bytes in media files or broadcast streams to crash FFmpeg or VLC or corrupt the return address.
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
栈缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
nkoriyama aribb24 0 ~ 1.0.3 -

II. Public POCs for CVE-2026-112281

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III. Intelligence Information for CVE-2026-112281

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Vendor Advisories for CVE-2026-112281 (1)

Security Blog Posts for CVE-2026-112281 (1)

IV. Related Vulnerabilities

Same product: aribb24
Same vendor: nkoriyama
Same weakness: CWE-121

V. Comments for CVE-2026-112281

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