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Vulnerability record · CVE-2024-34251 · published 6 May 2024

CVE-2024-34251: Bytecodealliance webassembly micro runtime out-of-bounds read vulnerability

Bytecodealliance · Webassembly Micro Runtime

An out-of-bound memory read vulnerability was discovered in Bytecode Alliance wasm-micro-runtime v2.0.0 which allows a remote attacker to cause a denial of service via the "block_type_get_arity" function in core/iwasm/interpreter/wasm.h.

7.5 CVSS 3.1 High EPSS 0.76% · top 46.6% CWE-125 · Out-of-bounds read
7.5CVSS 3.1 base score
0.76%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

An out-of-bound memory read vulnerability was discovered in Bytecode Alliance wasm-micro-runtime v2.0.0 which allows a remote attacker to cause a denial of service via the "block_type_get_arity" function in core/iwasm/interpreter/wasm.h.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/bytecodealliance/wasm-micro-runtime/issues/3347 ExploitIssue Tracking
https://github.com/bytecodealliance/wasm-micro-runtime/issues/3347 ExploitIssue Tracking

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2024-34251), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.