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CVE-2025-69209 ArduinoCore-avr has Stack-Based Buffer Overflow in WString Float/Double Constructors

🗓️ 21 Jan 2026 20:00:41Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 23 Views

ArduinoCore-avr pre-1.8.7 has stack overflow in WString constructors with large decimalPlaces, risking code execution.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2025-69209
21 Jan 202620:00
attackerkb
circl
Circl
CVE-2025-69209
21 Jan 202622:03
circl
cnnvd
CNNVD
Arduino and AVR Board Security Vulnerabilities
21 Jan 202600:00
cnnvd
cve
CVE
CVE-2025-69209
21 Jan 202620:00
cve
debiancve
Debian CVE
CVE-2025-69209
21 Jan 202620:00
debiancve
euvd
EUVD
EUVD-2025-206313
21 Jan 202620:00
euvd
nvd
NVD
CVE-2025-69209
21 Jan 202620:16
nvd
osv
OSV
DEBIAN-CVE-2025-69209
21 Jan 202620:16
osv
osv
OSV
UBUNTU-CVE-2025-69209
21 Jan 202620:16
osv
ptsecurity
Positive Technologies
PT-2026-3858
21 Jan 202600:00
ptsecurity
Rows per page
[
  {
    "vendor": "arduino",
    "product": "ArduinoCore-avr",
    "versions": [
      {
        "version": "< 1.8.7",
        "status": "affected"
      }
    ]
  }
]

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