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CVE-2026-34944 Wasmtime segfault or unused out-of-sandbox load with `f64x2.splat` operator on x86-64

🗓️ 09 Apr 2026 18:38:16Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 15 Views

Wasmtime CVE-2026-34944: segfault or out-of-sandbox load for f64x2.splat on x86-64 when SSE3 is disabled; fixed.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-34944
9 Apr 202618:38
attackerkb
Chainguard
CVE-2026-34944 vulnerabilities
22 Apr 202607:18
cgr
CNNVD
wasmtime 安全漏洞
9 Apr 202600:00
cnnvd
CVE
CVE-2026-34944
9 Apr 202618:38
cve
Debian CVE
CVE-2026-34944
9 Apr 202618:38
debiancve
EUVD
EUVD-2026-21023
9 Apr 202620:22
euvd
Github Security Blog
Wasmtime segfault or unused out-of-sandbox load with `f64x2.splat` operator on x86-64
9 Apr 202620:22
github
NVD
CVE-2026-34944
9 Apr 202619:16
nvd
OPENSUSE Linux
Security update for tree-sitter (important)
19 May 202600:00
opensuse
OSV
CGA-9GQP-P96H-8RJ6
22 Apr 202605:00
osv
Rows per page
[
  {
    "vendor": "bytecodealliance",
    "product": "wasmtime",
    "versions": [
      {
        "version": "< 24.0.7",
        "status": "affected"
      },
      {
        "version": ">= 25.0.0, < 36.0.7",
        "status": "affected"
      },
      {
        "version": ">= 37.0.0, < 42.0.2",
        "status": "affected"
      },
      {
        "version": ">= 43.0.0, < 44.0.1",
        "status": "affected"
      }
    ]
  }
]

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09 Apr 2026 18:38Current
CVSS 44.1
EPSS0.0001
15