CVE-2026-7422 MAC Address Validation Bypass in FreeRTOS-Plus-TCP IPv4 and IPv6 Packet Processing

Insufficient packet validation in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to bypass all checksum and minimum-size validation by spoofing the Ethernet source MAC address to match one of the device's own registered endpoints, because the loopback detection...

FreeRTOS-Plus-TCP 安全漏洞

FreeRTOS-Plus-TCP is an extensible, open-source TCP/IP stack designed for use with FreeRTOS. Security vulnerabilities existed in versions prior to V4.2.6 and V4.4.1 of FreeRTOS-Plus-TCP. These vulnerabilities stemmed from insufficient data packet validation, allowing adjacent network participants...

CVE-2026-7426: Out-of-bounds Write

Insufficient validation of the prefix length field in IPv6 Router Advertisement processing in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to cause memory corruption by sending a crafted Router Advertisement with a prefix length value exceeding the maximum valid...

CVE-2026-7424: Integer Underflow (Wrap or Wraparound)

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 ...

FreeRTOS-Plus-TCP 数字错误漏洞

FreeRTOS-Plus-TCP is an extensible, open-source, and thread-safe TCP/IP stack designed for use with FreeRTOS. Versions prior to V4.4.1 and V4.2.6 of FreeRTOS-Plus-TCP contained a numerical error vulnerability. This vulnerability stemmed from integer underflow in the DHCPv6 sub-option parser, whic...

FreeRTOS-Plus-TCP 数字错误漏洞

FreeRTOS-Plus-TCP is an extensible, open-source TCP/IP stack designed for use with FreeRTOS. Versions prior to 4.4.1 and 4.2.6 of FreeRTOS-Plus-TCP contained a numerical error vulnerability. This vulnerability stemmed from integer overflows in the ICMP and ICMPv6 echo reply handlers, which could...

CVE-2026-7422: Authentication Bypass by Spoofing

Insufficient packet validation in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to bypass all checksum and minimum-size validation by spoofing the Ethernet source MAC address to match one of the device's own registered endpoints, because the loopback detection...

PT-2026-35973

Name of the Vulnerable Software and Affected Versions FreeRTOS-Plus-TCP versions prior to 4.2.6 FreeRTOS-Plus-TCP versions prior to 4.4.1 Description Insufficient packet validation allows an adjacent network actor to bypass checksum and minimum-size validation. This occurs because the loopback...

PT-2026-35980

Insufficient validation of the prefix length field in IPv6 Router Advertisement processing in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to cause memory corruption by sending a crafted Router Advertisement with a prefix length value exceeding the maximum valid...

FreeRTOS-Plus-TCP 缓冲区错误漏洞

FreeRTOS-Plus-TCP is an extensible, open-source TCP/IP stack designed for use with FreeRTOS. Versions prior to V4.2.6 and V4.4.1 of FreeRTOS-Plus-TCP contained a buffer error vulnerability. This vulnerability stemmed from insufficient option length validation in the IPv6 router advertisement...

FreeRTOS-Plus-TCP 缓冲区错误漏洞

FreeRTOS-Plus-TCP is an extensible, open-source TCP/IP stack designed for use with FreeRTOS. Versions prior to V4.2.6 and V4.4.1 of FreeRTOS-Plus-TCP contained a buffer error vulnerability. This vulnerability stemmed from insufficient validation of the prefix length field during IPv6 router...

CVE-2026-7423: Integer Underflow (Wrap or Wraparound)

Integer underflow in the ICMP and ICMPv6 echo reply handlers in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adjacent network user to cause a denial of service device crash when outgoing ping support is enabled, because header sizes are subtracted from a packet length field without...

CVE-2026-7425: Out-of-bounds Read

Insufficient option length validation in the IPv6 Router Advertisement parser in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to cause a denial of service device crash by sending a crafted Router Advertisement with a truncated PREFIXINFORMATION option that is smalle...

PT-2026-35974

Name of the Vulnerable Software and Affected Versions FreeRTOS-Plus-TCP versions prior to V4.4.1 FreeRTOS-Plus-TCP versions prior to V4.2.6 Description An integer underflow exists in the ICMP and ICMPv6 echo reply handlers when outgoing ping support is enabled. This occurs because header sizes ar...

PT-2026-35979

Insufficient option length validation in the IPv6 Router Advertisement parser in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to cause a denial of service device crash by sending a crafted Router Advertisement with a truncated PREFIX INFORMATION option that is small...

Exploit for CVE-2025-5688

CVE-2025-5688 – FreeRTOS-Plus-TCP Out-of-Bounds Write Exploit...

CVE-2021-31571

The kernel in Amazon Web Services FreeRTOS before 10.4.3 has an integer overflow in queue.c for queue creation...

The vulnerability of the TCP/IP protocol stack implementation in the real-time operating system FreeRTOS-Plus-TCP allows a attacker to compromise the confidentiality and accessibility of the protected information.

The vulnerability of the TCP/IP protocol stack implementation in the real-time operating system FreeRTOS-Plus-TCP lies in the execution of operations beyond the buffer boundaries in memory. Exploiting this vulnerability allows a malicious actor to compromise the confidentiality and accessibility ...

The vulnerability of the TCP/IP protocol stack implementation in the real-time operating system FreeRTOS-Plus-TCP allows a attacker to compromise the confidentiality and accessibility of the protected information.

The vulnerability of the TCP/IP protocol stack implementation in the real-time operating system FreeRTOS-Plus-TCP lies in the execution of operations beyond the buffer boundaries in memory. Exploiting this vulnerability allows a malicious actor to compromise the confidentiality and accessibility ...

CVE-2025-11618

A missing validation check in FreeRTOS-Plus-TCP's UDP/IPv6 packet processing code can lead to an invalid pointer dereference when receiving a UDP/IPv6 packet with an incorrect IP version field in the packet header. This issue only affects applications using IPv6. We recommend upgrading to the...