CVE-2024-23937

Information disclosure via unvalidated debug format string

Published Jan 31, 2025 · Updated Jul 1, 2025

Format-string information disclosure in Silicon Labs Gecko OS allows network-adjacent attackers to read sensitive device data without authentication. The debug interface uses a user-supplied string as a format specifier without validating it, causing unintended memory contents to enter its output. Adjacent-network access is required, and the disclosed data can support a separate exploit chain that executes code on the device.

CVSS severity4.3
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Format-string information disclosure in Silicon Labs Gecko OS allows network-adjacent attackers to read sensitive device data without authentication. The debug interface uses a user-supplied string as a format specifier without validating it, causing unintended memory contents to enter its output. Adjacent-network access is required, and the disclosed data can support a separate exploit chain that executes code on the device.

The record

CVE
CVE-2024-23937
Published
Jan 31, 2025
Updated
Jul 1, 2025
Vendor
Sigma Designs
Product
Gecko OS
Classifications
CWE-200, T1005
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 31, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 1, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=all versions

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Sigma Designs · Gecko OSversion=all versions

Published CVSS scores

4.3Zero Day InitiativeCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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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