Buffer overflow in Webassembly

CVE-2023-27117

WebAssembly v1.0.29 was discovered to contain a heap overflow via the component component wabt::Node::operator.

Vulnerability class: Buffer Overflow

EPSS: 0.003 (24.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Webassembly — versions 1.0.29
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (Exploit, Issue Tracking)

Frequently asked questions

What is CVE-2023-27117?: CVE-2023-27117 is a high-severity vulnerability in Webassembly, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2023-03-10.
How severe is CVE-2023-27117?: High severity. CVSS v3 base score is 7.8 out of 10.