What is CVE-2023-23306?

CVE-2023-23306 is a critical-severity vulnerability in Garmin Connect-Iq, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-05-23.

How severe is CVE-2023-23306?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Garmin Connect-Iq

CVE-2023-23306

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.

Vulnerability class: Buffer Overflow

EPSS: 0.012 (65.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Garmin Connect-iq
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (Product)
cve@mitre.org (Exploit)

Frequently asked questions

What is CVE-2023-23306?: CVE-2023-23306 is a critical-severity vulnerability in Garmin Connect-Iq, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-05-23.
How severe is CVE-2023-23306?: Critical severity. CVSS v3 base score is 9.8 out of 10.