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CVE-2025-14956

WebAssembly Binaryen wasm-binary.cpp readExport heap-based overflow

CVSS 4.8 MEDIUMEPSS 0.2%CWE-119CWE-122
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 4.8EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Lifecycle
19 Dec 2025Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
A vulnerability was determined in WebAssembly Binaryen up to 125. Affected by this issue is the function WasmBinaryReader::readExport of the file src/wasm/wasm-binary.cpp. This manipulation causes heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. Patch name: 4f52bff8c4075b5630422f902dd92a0af2c9f398. It is recommended to apply a patch to fix this issue.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
WebAssembly · Binaryen

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References
https://github.com/oneafter/1204/blob/main/hbfhttps://github.com/WebAssembly/binaryen/https://github.com/WebAssembly/binaryen/commit/4f52bff8c4075b5630422f902dd92a0af2c9f398https://github.com/WebAssembly/binaryen/issues/8089https://github.com/WebAssembly/binaryen/pull/8092https://vuldb.com/?ctiid.337592https://vuldb.com/?id.337592https://vuldb.com/?submit.717315