CVE-2026-95509— Out-of-bounds read vulnerability in string formatting impacts Qt for MCUs
Quick assessment
Affected
qt Qt for MCUs
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.
针对 Latin-1 显示优化的字符串在包含 Latin-1 字符时，由于缓冲区大小计算错误，导致 格式化不正确，从而引发越界读取。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-95509
Vulnerability Information
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Vulnerability Title
Out-of-bounds read vulnerability in string formatting impacts Qt for MCUs
Source: CVE Program / CVE List V5
Vulnerability Description
Strings optimized for Latin-1 displaying Latin-1 characters cause incorrect String.arg() formatting by an incorrect buffer size calculation, causing out-of-bounds reading.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
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 |
|---|---|---|---|---|
| qt | Qt for MCUs | 2.6.0 ~ 2.11.3 | - |
|
II. Public POCs for CVE-2026-95509
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-95509 (1)
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V. Comments for CVE-2026-95509
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