DEBIAN-CVE-2025-69209

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Source
https://security-tracker.debian.org/tracker/CVE-2025-69209
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-69209.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2025-69209
Upstream
Published
2026-01-21T20:16:10.280Z
Modified
2026-03-17T02:51:17.718137Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
Details

ArduinoCore-avr contains the source code and configuration files of the Arduino AVR Boards platform. A vulnerability in versions prior to 1.8.7 allows an attacker to trigger a stack-based buffer overflow when converting floating-point values to strings with high precision. By passing very large decimalPlaces values to the affected String constructors or concat methods, the dtostrf function writes beyond fixed-size stack buffers, causing memory corruption and denial of service. Under specific conditions, this could enable arbitrary code execution on AVR-based Arduino boards. ### Patches - The Fix is included starting from the 1.8.7 release available from the following link ArduinoCore-avr v1.8.7 - The Fixing Commit is available at the following link 1a6a417f89c8901dad646efce74ae9d3ddebfd59 ### References - ASEC-26-001 ArduinoCore-avr vXXXX Resolves Buffer Overflow Vulnerability ### Credits - Maxime Rossi Bellom and Ramtine Tofighi Shirazi from SecMate (https://secmate.dev/)

References

Affected packages

Debian:11 / arduino-core-avr

Package

Name
arduino-core-avr
Purl
pkg:deb/debian/arduino-core-avr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.8.3+dfsg1-1
1.8.4+dfsg1-1
1.8.5+dfsg-1
1.8.6+dfsg-1
1.8.6+dfsg-2
1.8.7+dfsg-1~deb13u1
1.8.7+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-69209.json"

Debian:12 / arduino-core-avr

Package

Name
arduino-core-avr
Purl
pkg:deb/debian/arduino-core-avr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.8.6+dfsg-1
1.8.6+dfsg-2
1.8.7+dfsg-1~deb13u1
1.8.7+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-69209.json"

Debian:13 / arduino-core-avr

Package

Name
arduino-core-avr
Purl
pkg:deb/debian/arduino-core-avr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.8.6+dfsg-2
1.8.7+dfsg-1~deb13u1
1.8.7+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-69209.json"

Debian:14 / arduino-core-avr

Package

Name
arduino-core-avr
Purl
pkg:deb/debian/arduino-core-avr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.8.7+dfsg-1

Affected versions

1.*
1.8.6+dfsg-2
1.8.7+dfsg-1~deb13u1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-69209.json"