CVE-2025-43853: iwasm vulnerable to filesystem sandbox escape with symlink when using uvwasi feature

Overview

Severity

Medium (CVSS 5.5)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2025-May

Released

2026-08-12

EPSS Score

0.26% (percentile: 17.1%)

Affected Products (3)

Other

• 19787
• 19445-17084
• 19787-21692

Revision History

• 2026-08-12: Information published.