Reachable Assertion Affecting WebAssembly/wabt package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-WEBASSEMBLYWABT-10774354
- published18 Jul 2025
- disclosed19 Jun 2025
- creditYifan Zhang
Introduced: 19 Jun 2025
CVE-2025-6273 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Reachable Assertion in the LogOpcode function. An attacker can cause the application to terminate unexpectedly by triggering an assertion in in_function_body through crafted input processed locally.
Note:
The issue is doubted by the maintainer at the moment as there is no evidence it might affect "real world wasm programs".