How severe is CVE-2025-15412?

CVE-2025-15412 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-15412 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-15412?

CVE-2025-15412 affects Webassembly Wabt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-15412?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-15412 have an EU (EUVD) identifier?

Yes. CVE-2025-15412 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-0003.

When was CVE-2025-15412 published?

CVE-2025-15412 was published on 2026-01-01 and last updated on 2026-06-17.

CVE-2025-15412

CVE-2025-15412 is a medium-severity vulnerability in Webassembly Wabt with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 4.3
CVSS v4: 1.9
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-0003
Weakness: CWE-119
Affected product: Webassembly Wabt
Published: 2026-01-01
Last modified: 2026-06-17

Description

A security vulnerability has been detected in WebAssembly wabt up to 1.0.39. This issue affects the function wabt::Decompiler::VarName of the file /src/repro/wabt/bin/wasm-decompile of the component wasm-decompile. Such manipulation leads to out-of-bounds read. Local access is required to approach this attack. The exploit has been disclosed publicly and may be used. 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.

Frequently asked questions

What is CVE-2025-15412?: A security vulnerability has been detected in WebAssembly wabt up to 1.0.39. This issue affects the function wabt::Decompiler::VarName of the file /src/repro/wabt/bin/wasm-decompile of the component wasm-decompile. Such manipulation leads to out-of-bounds read. Local access is required to approach this attack. The exploit has been disclosed publicly and may be used. 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.
How severe is CVE-2025-15412?: CVE-2025-15412 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-15412 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-15412?: CVE-2025-15412 affects Webassembly Wabt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-15412?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-15412 have an EU (EUVD) identifier?: Yes. CVE-2025-15412 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-0003.
When was CVE-2025-15412 published?: CVE-2025-15412 was published on 2026-01-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:webassembly:wabt:*:*:*:*:*:*:*:*

More vulnerabilities in Webassembly Wabt

CVE-2022-43282 — High (CVSS 7.1): wasm-interp v1.0.29 was discovered to contain an out-of-bounds read via the component…
CVE-2022-43280 — High (CVSS 7.1): wasm-interp v1.0.29 was discovered to contain an out-of-bounds read via the component…
CVE-2025-2368 — Medium (CVSS 6.3): A vulnerability was found in WebAssembly wabt 1.0.36 and classified as critical. This issue affects the function…
CVE-2023-27119 — Medium (CVSS 5.5): WebAssembly v1.0.29 was discovered to contain a segmentation fault via the component wabt::Decompiler::WrapChild.
CVE-2022-43283 — Medium (CVSS 5.5): wasm2c v1.0.29 was discovered to contain an abort in CWriter::Write.
CVE-2025-15411 — Medium (CVSS 5.3): A weakness has been identified in WebAssembly wabt up to 1.0.39. This vulnerability affects the function…

All CVEs affecting Webassembly Wabt →

Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities

CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…
CVE-2026-2776 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability…
CVE-2025-1866 — Critical (CVSS 10.0): Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in warmcat libwebsockets allows…
CVE-2022-27625 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2022-27624 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2020-11896 — Critical (CVSS 10.0): The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.

Browse all CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities →