What’s Vulnerable › Vulnerabilities

CVE-2024-23973: Silicon Labs Gecko OS HTTP GET Request Handling Stack-based Buffer Overflow

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% 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-120

Description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Silicon Labs Gecko OS. Authentication is not required to exploit this vulnerability.  The specific flaw exists within the handling of HTTP GET requests. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute 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-24-873/

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