CVE-2024-23937: Silicon Labs Gecko OS Debug Interface Format String

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-01-31 · updated 2026-06-17
Weakness: CWE-200

Description

This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of Silicon Labs Gecko OS. Authentication is not required to exploit this vulnerability. The specific flaw exists within the debug interface. The issue results from the lack of proper validation of a user-supplied string before using it as a format specifier. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the device.

Affected products

Silicon Labs Gecko OS: all versions

References

https://community.silabs.com/a45Vm0000000Atp
https://www.zerodayinitiative.com/advisories/ZDI-24-869/

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