Live › vulnerability › CVE-2026-116734
Go to dashboardflatcc through 0.6.4 has a dead-code overflow guard in its FlatBuffers verifier's check_header function. On 32-bit builds, a crafted buffer offset wraps the bounds check and causes an out-of-bounds read before the buffer, which crashes the process.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-26 22:25 UTC. All times on this page are UTC.
Teams that compile or run flatcc 0.6.4 or earlier on 32-bit targets and pass untrusted FlatBuffers input to its verifier. The sources do not say which products bundle flatcc. 64-bit builds are not described as affected.
No product ranges from the sources yet.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
flatcc through 0.6.4 contains an integer overflow vulnerability in the check_header function of the FlatBuffers verifier because its overflow guard is dead code. On 32-bit builds, attackers can supply a crafted buffer offset that wraps the bounds check, causing an out-of-bounds read before the buffer and crashing the process.
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