CVE-2026-7426 (GCVE-0-2026-7426)
Vulnerability from cvelistv5
Published
2026-04-29 18:53
Modified
2026-04-29 22:14
Severity ?
8.1 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
6.1 (Medium) - CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
CWE
Summary
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 length, resulting in a heap buffer overflow. Users processing IPv4 RA only are not impacted. To mitigate this issue, users should upgrade to the fixed version when available.
References
Impacted products
Vendor Product Version
AWS FreeRTOS-Plus-TCP Version: 4.0.0   ≤
Version: 4.3.0   ≤
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                "timestamp": "2026-04-29T19:33:03.058186Z",
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    "dateReserved": "2026-04-29T14:27:53.201Z",
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    "state": "PUBLISHED"
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