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CVE-2023-23298

28
FAUCET Score

CVE-2023-23298 is a critical vulnerability affecting Garmin Connect IQ API versions 2.3.0 through 4.1.7, where the Toybox.Graphics.BufferedBitmap.initialize method lacks parameter validation, leading to integer overflows during bitmap buffer allocation. This allows a remote, unauthenticated attacker to execute arbitrary code and potentially hijack device firmware with high impact on confidentiality, integrity, and availability. While rated as critical with a CVSS score of 9.8, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.3.0, <= 4.1.7CPE matchmatch criteria
cpe:2.3:a:garmin:connect-iq:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.46%
Probability of exploitation in next 30 days
EPSS Percentile
70.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0146 is in the 58th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

developer.garmin.com / connect-iq/api-docs/Toybox/Graphics/BufferedBitmap.html
Product
developer.garmin.com / connect-iq/compatible-devices
Product
github.com / anvilsecure/garmin-ciq-app-research/blob/main/advisories/CVE-2023-23298.md
Exploit