PT-2026-35979 · Aws · Freertos-Plus-Tcp

Eun0Us · Published 2026-04-29 · Updated 2026-04-29 · CVE-2026-7425

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions FreeRTOS-Plus-TCP versions prior to V4.2.6 FreeRTOS-Plus-TCP versions prior to V4.4.1

Description Insufficient option length validation in the IPv6 Router Advertisement parser allows an adjacent network actor to cause a denial of service, resulting in a device crash. This occurs when a crafted Router Advertisement is sent with a truncated PREFIX INFORMATION option that is smaller than the expected structure size.

Recommendations Upgrade to version V4.2.6 or later. Upgrade to version V4.4.1 or later.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-7425

Affected Products

Freertos-Plus-Tcp

References · 6

• https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-gffr-xgjg-jh9j · Patch
• https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.1 · Patch
• https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.2.6 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-7425 · Security Note
• https://aws.amazon.com/security/security-bulletins/2026-023-aws · Vendor Advisory
• https://twitter.com/CVEnew/status/2049578369566822617 · Twitter Post