Integer Underflow (Wrap or Wraparound) Affecting FreeRTOS/FreeRTOS-Plus-TCP package, versions [,4.2.6)[4.3.0,4.4.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UNMANAGED-FREERTOSFREERTOSPLUSTCP-16323055
- published30 Apr 2026
- disclosed29 Apr 2026
- creditEun0us
Introduced: 29 Apr 2026
NewCVE-2026-7424 (opens in a new tab)How to fix?
Upgrade FreeRTOS/FreeRTOS-Plus-TCP to version 4.2.6, 4.4.1 or higher.
Overview
Affected versions of this package are vulnerable to Integer Underflow (Wrap or Wraparound) via the DHCPv6 sub-option parsing process. An attacker can corrupt IPv6 address assignment, DNS configuration, and lease times, or cause a denial of service by sending a single crafted DHCPv6 packet. This is only exploitable if DHCPv6 is enabled.