CVE Explorer
CVE-2025-69209
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
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"ArduinoCore-avr","vendor":"arduino","versions":[{"status":"affected","version":"< 1.8.7"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:25955f1b09d003576ac2957dc24719bf64564df6372752290cc8658c8786f7bd · sha256:754ee9893dd68973… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":6.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:25955f1b09d003576ac2957dc24719bf64564df6372752290cc8658c8786f7bd · sha256:754ee9893dd68973… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-120","description":"CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:25955f1b09d003576ac2957dc24719bf64564df6372752290cc8658c8786f7bd · sha256:754ee9893dd68973… · /containers/cna/problemTypes/0/descriptions/0
Source references
5 source assertions{"name":"https://github.com/arduino/ArduinoCore-avr/commit/82a8ad2fb33911d8927c7af22e0472b94325d1a7","tags":["x_refsource_MISC"],"url":"https://github.com/arduino/ArduinoCore-avr/commit/82a8ad2fb33911d8927c7af22e0472b94325d1a7"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:25955f1b09d003576ac2957dc24719bf64564df6372752290cc8658c8786f7bd · sha256:754ee9893dd68973… · /containers/cna/references/2
{"name":"https://github.com/arduino/ArduinoCore-avr/pull/613","tags":["x_refsource_MISC"],"url":"https://github.com/arduino/ArduinoCore-avr/pull/613"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:25955f1b09d003576ac2957dc24719bf64564df6372752290cc8658c8786f7bd · sha256:754ee9893dd68973… · /containers/cna/references/1
{"name":"https://github.com/arduino/ArduinoCore-avr/releases/tag/1.8.7","tags":["x_refsource_MISC"],"url":"https://github.com/arduino/ArduinoCore-avr/releases/tag/1.8.7"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:25955f1b09d003576ac2957dc24719bf64564df6372752290cc8658c8786f7bd · sha256:754ee9893dd68973… · /containers/cna/references/3
{"name":"https://github.com/arduino/ArduinoCore-avr/security/advisories/GHSA-pvx3-fm7w-6hjm","tags":["x_refsource_CONFIRM"],"url":"https://github.com/arduino/ArduinoCore-avr/security/advisories/GHSA-pvx3-fm7w-6hjm"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:25955f1b09d003576ac2957dc24719bf64564df6372752290cc8658c8786f7bd · sha256:754ee9893dd68973… · /containers/cna/references/0
{"name":"https://support.arduino.cc/hc/en-us/articles/24985906702748-ASEC-26-001-ArduinoCore-AVR-v1-8-7-Resolves-Stack-Based-Buffer-Overflow-Vulnerability","tags":["x_refsource_MISC"],"url":"https://support.arduino.cc/hc/en-us/articles/24985906702748-ASEC-26-001-ArduinoCore-AVR-v1-8-7-Resolves-Stack-Based-Buffer-Overflow-Vulnerability"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:25955f1b09d003576ac2957dc24719bf64564df6372752290cc8658c8786f7bd · sha256:754ee9893dd68973… · /containers/cna/references/4
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.