CVE-2021-46879

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

An issue was discovered in Treasure Data Fluent Bit 1.7.1, a wrong variable is used to get the msgpack data resulting in a heap overflow in flb_msgpack_gelf_value_ext. An attacker can craft a malicious file and tick the victim to open the file with the software, triggering a heap overflow and execute arbitrary code on the target system.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-787

Affected software

No affected versions have been published.

Timeline

Published
Apr 11, 2023
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-46879: High severity, CVSS 7.8 | Vulnix