CVE-2026-102552: CWE-940 Improper verification of source of a communication channel in FreeRTOS FreeRTOS-Plus-TCP
Description
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 v3.1
Score 5.9medium
Affected software
FreeRTOS
FreeRTOS-Plus-TCP
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- AMZN
- Date Reserved
- 2026-09-29T13:04:14.207Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://aws.amazon.com/security/security-bulletins/2026-139-aws/","vendor":"AWS"}]
Threat ID: 6ad2641f2cdf04f656199fa5
Added to database: 10/16/2026, 17:51:27 UTC
Last updated: 10/16/2026, 17:51:27 UTC
Views: 1
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.