CVE-2025-15413Public exploitHinoki check available

Runtime crash via unchecked interpreter indices

Published Jan 1, 2026 · Updated Jan 1, 2026

Memory corruption in Wasm3 0.5.0 and earlier allows local users to crash the runtime through crafted WebAssembly execution. In m3_exec.h, op_SetSlot_i32 writes a 32-bit value to an interpreter stack slot without sufficient bounds validation, while op_CallIndirect reads function data through an invalid table or stack index. Low-privileged local access is required; demonstrated release builds terminate with a segmentation fault, while code execution has not been established.

CVSS severity7.8
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Memory corruption in Wasm3 0.5.0 and earlier allows local users to crash the runtime through crafted WebAssembly execution. In m3_exec.h, op_SetSlot_i32 writes a 32-bit value to an interpreter stack slot without sufficient bounds validation, while op_CallIndirect reads function data through an invalid table or stack index. Low-privileged local access is required; demonstrated release builds terminate with a segmentation fault, while code execution has not been established.

The record

CVE
CVE-2025-15413
Published
Jan 1, 2026
Updated
Jan 1, 2026
Vendor
Wasm3 Labs
Product
Wasm3
Classifications
CWE-119, CWE-787, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.1
  2. Affected versionversion=0.2
  3. Affected versionversion=0.3
  4. Affected versionversion=0.4
  5. Affected versionversion=0.5.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Wasm3 Labs · Wasm3version=0.1; version=0.2; version=0.3; version=0.4; version=0.5.0

Published CVSS scores

1.9VulDBCVSS: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
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
4.3VulDBAV:L/AC:L/Au:S/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-787Out-of-bounds Write
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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