CVE-2023-23305

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-05-23 · updated 2026-06-17
Weakness: CWE-120

Description

The GarminOS TVM component in CIQ API version 1.0.0 through 4.1.7 is vulnerable to various buffer overflows when loading binary resources. A malicious application embedding specially crafted resources could hijack the execution of the device's firmware.

Affected products

Garmin Connect-Iq: from 1.0.0 through 4.1.7

References

https://github.com/anvilsecure/garmin-ciq-app-research/blob/main/advisories/CVE-2023-23305.md
https://github.com/anvilsecure/garmin-ciq-app-research/blob/main/advisories/CVE-2023-23305.md
https://github.com/anvilsecure/garmin-ciq-app-research/blob/main/poc/GRMN-06.prg

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