CVEvulnerability

CVE-2026-7424

7.2 HIGH Published 2026-04-29 Modified 2026-10-26 Official page ↗
Status
Analyzed
Published
2026-04-29
Last modified
2026-10-26
Assigner
ff89ba41-3aa1-4d27-914a-91399e9639e5
CVSS 4.0 (ff89ba41-3aa1-4d27-914a-91399e9639e5)
7.2 HIGH — CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 (ff89ba41-3aa1-4d27-914a-91399e9639e5)
8.1 HIGH — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Weaknesses
CWE-191

Description

Integer underflow in the DHCPv6 sub-option parser in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adjacent network actor to corrupt the device's IPv6 address assignment, DNS configuration, and lease times, and to cause a denial of service (permanent IP task freeze requiring hardware reset) by sending a single crafted DHCPv6 packet. The issue is present whenever DHCPv6 is enabled. To mitigate this issue, users should upgrade to version V4.2.6 or V4.4.1 or newer.

Affected configurations

• amazon freertos-plus-tcp (>= 4.0.0 < 4.2.6) • amazon freertos-plus-tcp (>= 4.3.0 < 4.4.1)

Related

Weakness · CWE (1)

  • CWE-191 Integer Underflow (Wrap or Wraparound) weakness

References