CVE-2021-38196

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

An issue was discovered in the better-macro crate through 2021-07-22 for Rust. It intentionally demonstrates that remote attackers can execute arbitrary code via proc-macros, and otherwise has no legitimate purpose.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-94

Affected software

No affected versions have been published.

Timeline

Published
Aug 8, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

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CVE-2021-38196: Critical severity, CVSS 9.8 | Vulnix