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.
History

Tue, 27 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 27 Oct 2026 07:45:00 +0000

Type Values Removed Values Added
First Time appeared Dvidelabs
Dvidelabs flatcc
Vendors & Products Dvidelabs
Dvidelabs flatcc

Tue, 27 Oct 2026 04:30:00 +0000

Type Values Removed Values Added
Description 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.
Title flatcc through 0.6.4 Out-of-Bounds Read via verifier check_header
First Time appeared Flatcc Project
Flatcc Project flatcc
Weaknesses CWE-190
CPEs cpe:2.3:a:flatcc_project:flatcc:*:*:*:*:*:*:*:*
Vendors & Products Flatcc Project
Flatcc Project flatcc
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-26T21:52:34.998Z

Updated: 2026-10-27T14:17:08.680Z

Reserved: 2026-10-26T20:23:35.552Z

Link: CVE-2026-116734

cve-icon Vulnrichment

Updated: 2026-10-27T13:42:03.497Z

cve-icon NVD

Status : Deferred

Published: 2026-10-26T22:16:57.527

Modified: 2026-10-27T15:16:46.750

Link: CVE-2026-116734

cve-icon Redhat

No data.