Analysis
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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| arduino | ArduinoCore-avr | affected |
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Fri, 11 Sep 2026 23:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | ArduinoCore-avr contains the source code and configuration files of the Arduino AVR Boards platform. A vulnerability in versions prior to 1.8.8 allows an attacker to trigger a stack-based buffer overflow when concatenating floating-point values of sufficiently large magnitude onto an Arduino String object. By passing values near the extremes of the float or double range to `String::concat(float)`, `String::concat(double)`, `String::operator+=()`, or the `+` operator with a float/double operand, `dtostrf()` writes beyond the fixed-size stack buffer, causing memory corruption and denial of service. Under specific conditions, this could enable arbitrary code execution on AVR-based Arduino boards. The fix is included starting from the `1.8.8 `release. | |
| Title | ArduinoCore-AVR: Stack-Based Buffer Overflow in String float/double concatenation handler | |
| Weaknesses | CWE-120 | |
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cvssV4_0
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Subscriptions
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-09-11T21:00:06.071Z
Reserved: 2026-05-21T15:33:08.291Z
Link: CVE-2026-48490
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-09-11T21:17:10.100
Modified: 2026-09-11T21:17:10.100
Link: CVE-2026-48490
Redhat
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OpenCVE Enrichment
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