CVE-2026-8257 WebAssembly Binaryen BrOn wasm-ir-builder.cpp makeBrOn assertion

A vulnerability was detected in WebAssembly Binaryen up to 117. This issue affects the function IRBuilder::makeBrOn of the file src/wasm/wasm-ir-builder.cpp of the component BrOn Parser. Performing a manipulation results in reachable assertion. The attack needs to be approached locally. The explo...

CVE-2026-8257

A vulnerability was detected in WebAssembly Binaryen up to 117. This issue affects the function IRBuilder::makeBrOn of the file src/wasm/wasm-ir-builder.cpp of the component BrOn Parser. Performing a manipulation results in reachable assertion. The attack needs to be approached locally. The explo...

Binaryen security vulnerabilities

Binaryen is a WebAssembly open-source compiler framework and toolchain library written in C++. There are security vulnerabilities in Binaryen 117 and earlier versions, which stem from a reach assertion issue in the IRBuilder::makeBrOn function in the BrOn Parser component...

CVE-2026-8257: Reachable Assertion

A vulnerability was detected in WebAssembly Binaryen up to 117. This issue affects the function IRBuilder::makeBrOn of the file src/wasm/wasm-ir-builder.cpp of the component BrOn Parser. Performing a manipulation results in reachable assertion. The attack needs to be approached locally. The explo...

PT-2026-39550

Name of the Vulnerable Software and Affected Versions WebAssembly Binaryen versions prior to 118 Description An issue exists in the BrOn Parser component within the IRBuilder::makeBrOn function of the src/wasm/wasm-ir-builder.cpp file. A specific manipulation can lead to a reachable assertion,...

Linux Distros Unpatched Vulnerability : CVE-2026-8257

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A vulnerability was detected in WebAssembly Binaryen up to 117. This issue affects the function IRBuilder::makeBrOn of the file src/wasm/wasm-ir-builder.cpp of...

Fedora 42 : binaryen (2026-3831e11232)

The remote Fedora 42 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-3831e11232 advisory. Fixes CVE-2025-14956 . Tenable has extracted the preceding description block directly from the Fedora security advisory. Note that Nessus has not tested for...

Fedora 43 : binaryen (2026-fb3e461878)

The remote Fedora 43 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-fb3e461878 advisory. Fixes CVE-2025-14956 . Tenable has extracted the preceding description block directly from the Fedora security advisory. Note that Nessus has not tested for...

SUSE CVE-2025-14956

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...

SUSE CVE-2025-14957

A vulnerability was identified in WebAssembly Binaryen up to 125. This affects the function IRBuilder::makeLocalGet/IRBuilder::makeLocalSet/IRBuilder::makeLocalTee of the file src/wasm/wasm-ir-builder.cpp of the component IRBuilder. Such manipulation of the argument Index leads to null pointer...

CVE-2025-14956

A flaw was found in Binaryen. A heap-based buffer over-read can be triggered in the WasmBinaryReader::readExpression function when parsing a malformed WebAssembly binary, resulting in a denial of service...

CVE-2025-14957

A flaw was found in Binaryen. A NULL pointer dereference can be triggered in the wasm::Function::getLocalType function when processing a malformed WebAssembly binary, resulting in a denial of service...

CVE-2025-14957

A vulnerability was identified in WebAssembly Binaryen up to 125. This affects the function IRBuilder::makeLocalGet/IRBuilder::makeLocalSet/IRBuilder::makeLocalTee of the file src/wasm/wasm-ir-builder.cpp of the component IRBuilder. Such manipulation of the argument Index leads to null pointer...

CVE-2025-14956

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...

CVE-2025-14956

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...

UBUNTU-CVE-2025-14956

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...

UBUNTU-CVE-2025-14957

A vulnerability was identified in WebAssembly Binaryen up to 125. This affects the function IRBuilder::makeLocalGet/IRBuilder::makeLocalSet/IRBuilder::makeLocalTee of the file src/wasm/wasm-ir-builder.cpp of the component IRBuilder. Such manipulation of the argument Index leads to null pointer...

CVE-2025-14957

A vulnerability was identified in WebAssembly Binaryen up to 125. This affects the function IRBuilder::makeLocalGet/IRBuilder::makeLocalSet/IRBuilder::makeLocalTee of the file src/wasm/wasm-ir-builder.cpp of the component IRBuilder. Such manipulation of the argument Index leads to null pointer...

CVE-2025-14957 WebAssembly Binaryen IRBuilder wasm-ir-builder.cpp makeLocalTee null pointer dereference

A vulnerability was identified in WebAssembly Binaryen up to 125. This affects the function IRBuilder::makeLocalGet/IRBuilder::makeLocalSet/IRBuilder::makeLocalTee of the file src/wasm/wasm-ir-builder.cpp of the component IRBuilder. Such manipulation of the argument Index leads to null pointer...

CVE-2025-14957 WebAssembly Binaryen IRBuilder wasm-ir-builder.cpp makeLocalTee null pointer dereference

A vulnerability was identified in WebAssembly Binaryen up to 125. This affects the function IRBuilder::makeLocalGet/IRBuilder::makeLocalSet/IRBuilder::makeLocalTee of the file src/wasm/wasm-ir-builder.cpp of the component IRBuilder. Such manipulation of the argument Index leads to null pointer...