How severe is CVE-2023-23305?

CVE-2023-23305 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-23305 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-23305?

CVE-2023-23305 affects Garmin Connect-iq. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-23305?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-23305 published?

CVE-2023-23305 was published on 2023-05-23 and last updated on 2026-06-17.

CVE-2023-23305

CVE-2023-23305 is a critical-severity vulnerability in Garmin Connect-iq with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Garmin Connect-iq
Published: 2023-05-23
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-23305?: 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.
How severe is CVE-2023-23305?: CVE-2023-23305 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-23305 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-23305?: CVE-2023-23305 affects Garmin Connect-iq. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-23305?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-23305 published?: CVE-2023-23305 was published on 2023-05-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:garmin:connect-iq:*:*:*:*:*:*:*:*

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