CVE-2026-102552highCWE-940

CVE-2026-102552: high-severity vulnerability in FreeRTOS-Plus-TCP

Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP DNS resolver

Published · Updated

Follow this CVE+ Monitor FreeRTOS-Plus-TCP

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.2epss 0.2%
Improper verification of the source of a communication channel in the DNS resolver in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow remote third-party to insert a chosen address into the device's DNS cache via a forged DNS reply. To remediate this issue, users should upgrade to version V4.4.2 and enable ipconfigDNS_CHECK_REPLY_SOURCE_IP.
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
FreeRTOS · FreeRTOS-Plus-TCP
Related CVEs — FreeRTOS-Plus-TCP

In the same product, most dangerous first.

CVE-2024-38373CRITICALFreeRTOS-Plus-TCP Buffer Over-Read in DNS Response ParserEPSS 0.6%CVE-2026-102551CRITICALImproper verification of the source of a communication channel in FreeRTOS-Plus-TCP Router Advertisement handlingEPSS 0.3%