CVE-2025-3122: WebAssembly wabt binary-reader-interp.cc BeginFunctionBody null pointer dereference

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-04-02 · updated 2026-06-17
Weakness: CWE-404

Description

A vulnerability classified as problematic was found in WebAssembly wabt 1.0.36. Affected by this vulnerability is the function BinaryReaderInterp::BeginFunctionBody of the file src/interp/binary-reader-interp.cc. The manipulation leads to null pointer dereference. The attack can be launched remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used.

Affected products

Webassembly Binary Toolkit: 1.0.36

References

https://github.com/WebAssembly/wabt/issues/2565
https://github.com/WebAssembly/wabt/issues/2565#issue-2927572319
https://vuldb.com/?ctiid.303013
https://vuldb.com/?id.303013
https://vuldb.com/?submit.525091

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