CVE-2026-102552
mediumImproper 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…
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
5.9
5.9 (CVSS v3.1)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N Severity source: NVD CVSS v3.1 (ff89ba41-3aa1-4d27-914a-91399e9639e5)
Timeline (UTC)
Published: 2026-10-16 18:17
Modified: 2026-10-19 13:16
NVD status: Awaiting Analysis
Last synced 1 day ago
Verified against the source API 2026-10-27 07:03 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://aws.amazon.com/security/security-bulletins/2026-139-aws/ ff89ba41-3aa1-4d27-914a-91399e9639e5
- https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.2 ff89ba41-3aa1-4d27-914a-91399e9639e5
- https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-h4fw-pv82-p7h5 ff89ba41-3aa1-4d27-914a-91399e9639e5
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:03 UTC · record ↗