CVE-2026-116734

flatcc through 0.6.4 Out-of-Bounds Read via verifier check_header

Published Oct 26, 2026 CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

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

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

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 27, 2026, 2:17 PM
Reserved
Oct 26, 2026, 8:23 PM
Status
Deferred
Published
Oct 26, 2026, 10:16 PM
Modified
Oct 27, 2026, 3:16 PM