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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (12.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 12th percentile — 12.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Webassembly Wabt — versions 1.0.0, 1.0.1, 1.0.2
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry, Third Party Advisory)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/WebAssembly/wabt/issues/2598 (issue-tracking, Exploit, Issue Tracking)
- github.com/user-attachments/files/20191325/wabt_crash_4.txt (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.