Buffer Over-read Affecting FreeRTOS/FreeRTOS-Plus-TCP package, versions [4.0.0,4.3.4)
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.
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Test your applications- Snyk IDSNYK-UNMANAGED-FREERTOSFREERTOSPLUSTCP-13542054
- published14 Oct 2025
- disclosed10 Oct 2025
- creditIvan Gotovchits
Introduced: 10 Oct 2025
NewCVE-2025-11617 (opens in a new tab)How to fix?
Upgrade FreeRTOS/FreeRTOS-Plus-TCP to version 4.3.4 or higher.
Overview
Affected versions of this package are vulnerable to Buffer Over-read via the IPv6 packet processing when handling packets with incorrect payload lengths in the packet header. An attacker can access sensitive memory contents or cause a crash by sending specially crafted IPv6 packets.
Note:
This is only exploitable if IPv6 is enabled in the application.