CVE-2023-23304Public exploit

Sensor-history disclosure via forged application version

Published May 23, 2023 · Updated Jan 31, 2025

Incorrect authorization in GarminOS CIQ API 2.1.0 through 4.1.7 allows attackers to read private sensor history via a crafted application. The TVM permission routine automatically authorizes Toybox.SensorHistory when the application header claims a version below 2.3.0, even if the permission section omits that module. Execution of the crafted application on a compatible Garmin device is required, after which its code can call any SensorHistory function and read records without user consent.

CVSS severity9.1
Critical
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in GarminOS CIQ API 2.1.0 through 4.1.7 allows attackers to read private sensor history via a crafted application. The TVM permission routine automatically authorizes Toybox.SensorHistory when the application header claims a version below 2.3.0, even if the permission section omits that module. Execution of the crafted application on a compatible Garmin device is required, after which its code can call any SensorHistory function and read records without user consent.

The record

CVE
CVE-2023-23304
Published
May 23, 2023
Updated
Jan 31, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-863, T1005
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 31, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
7.7CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1005Data from Local System

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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