CVE-2025-15411
Published: 01 January 2026
Summary
CVE-2025-15411 is a medium-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Webassembly Wabt. Its CVSS base score is 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 12.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Ongoing control assessments and code testing (static/dynamic analysis, fuzzing) surface memory buffer restriction failures, which are then remediated before release.
Managed runtimes used by platform-independent applications (e.g., JVM, CLR) enforce memory safety, preventing most buffer overflows that require direct memory manipulation.
Memory protections (e.g., W^X, ASLR) make exploitation of buffer-boundary violations far harder to turn into code execution.
Detects exploitation attempts that produce memory corruption, crashes, or anomalous behavior.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Local memory corruption in client tool enables exploitation for privilege escalation via malicious input to wasm-decompile.
NVD Description
A weakness has been identified in WebAssembly wabt up to 1.0.39. This vulnerability affects the function wabt::AST::InsertNode of the file /src/repro/wabt/bin/wasm-decompile of the component wasm-decompile. This manipulation causes memory corruption. It is possible to launch the attack on the local…
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host. The exploit has been made available to the public and could be used for attacks. Unfortunately, the project has no active maintainer at the moment. In a reply to the issue report somebody recommended to the researcher to provide a PR himself.
Deeper analysisAI
CVE-2025-15411 is a memory corruption vulnerability (CWE-119) affecting WebAssembly's wabt toolkit in versions up to 1.0.39. The issue resides in the wabt::AST::InsertNode function within the wasm-decompile component, specifically in the file /src/repro/wabt/bin/wasm-decompile.
The vulnerability can be exploited on the local host by an attacker with low privileges, under conditions of low attack complexity and no user interaction required. Exploitation results in memory corruption, yielding limited impacts on confidentiality, integrity, and availability, as reflected in its CVSS 3.1 base score of 5.3 (AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L).
Advisories note that a public exploit is available and could be used in attacks, with references including the wabt GitHub repository, issue #2679, and a proof-of-concept at github.com/oneafter/1208/blob/main/af1, alongside VulDB entries. The project lacks an active maintainer, and in response to the issue report, the researcher was recommended to submit a pull request themselves; no patches or official mitigations are referenced.
Details
- CWE(s)