Resource exhaustion in Webassembly Wabt

CVE-2025-6274

A vulnerability was found in WebAssembly wabt up to 1.0.37. It has been classified as problematic. Affected is the function OnDataCount of the file src/interp/binary-reader-interp.cc. The manipulation leads to resource consumption. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. A similar issue reported during the same timeframe was disputed by the code maintainer because it might not affect "real world wasm programs". Therefore, this entry might get disputed as well in the future.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.002 (8.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

Affected products

Weakness classification (CWE)

References

  • cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
  • cna@vuldb.com (signature, Permissions Required, permissions-required, VDB Entry, Third Party Advisory)
  • cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
  • cna@vuldb.com (issue-tracking, Exploit, Issue Tracking)
  • cna@vuldb.com (Exploit, exploit)

Frequently asked questions

What is CVE-2025-6274?
CVE-2025-6274 is a low-severity vulnerability in Webassembly Wabt, classified under Uncontrolled Resource Consumption. CVSS score: 3.3/10. Published 2025-06-19.
How severe is CVE-2025-6274?
Low severity. CVSS v3 base score is 3.3 out of 10.