Description
The `Toybox.Ant.BurstPayload.add` API method in CIQ API version 2.2.0 through 4.1.7 suffers from a type confusion vulnreability, which can result in an out-of-bounds write operation. A malicious application could create a specially crafted `Toybox.Ant.BurstPayload` object, call its `add` method, override arbitrary memory and hijack the execution of the device's firmware.
Metrics
CVSS 3.1 9.8/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- https://developer.garmin.com/connect-iq/api-docs/Toybox/Ant/BurstPayload.html#add-instance_functionProduct
- https://github.com/anvilsecure/garmin-ciq-app-research/blob/main/advisories/CVE-2023-23306.mdExploit
- https://developer.garmin.com/connect-iq/api-docs/Toybox/Ant/BurstPayload.html#add-instance_functionProduct
- https://github.com/anvilsecure/garmin-ciq-app-research/blob/main/advisories/CVE-2023-23306.mdExploit
Timeline
- Published
- May 23, 2023
- Last modified
- Jun 17, 2026
- NVD status
- Modified