CVE-2021-43790 is a high-severity use-after-free vulnerability (CWE-416) affecting all versions of the Lucet native WebAssembly compiler and runtime published to crates.io. This flaw allows for memory corruption, data races, or other issues when an Instance object is dropped, potentially leading to a complete compromise of confidentiality, integrity, and availability. With a CVSS score of 8.1, this network-exploitable vulnerability has high impact and high attack complexity, requiring users to upgrade to the main branch of the Lucet repository for remediation. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 0.6.1CPE matchmatch criteria | cpe:2.3:a:bytecodealliance:lucet:*:*:*:*:*:rust:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
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No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.