CVE-2025-69261 MEDIUM

CVE-2025-69261: WasmEdge integer wrap in MemoryInstance::getSpan()'s memory size check

Vendor Wasmedge
Product WasmEdge
Weakness CWE-190
Published December 30, 2025
Last update January 2, 2026
View on NVD All CVEs

CVSS base score

5.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

WasmEdge is a WebAssembly runtime. Prior to version 0.16.0-alpha.3, a multiplication in `WasmEdge/include/runtime/instance/memory.h` can wrap, causing `checkAccessBound()` to incorrectly allow the access. This leads to a segmentation fault. Version 0.16.0-alpha.3 contains a patch for the issue.

Key dates

02Disclosure timeline

December 30, 2025 CVE published
January 2, 2026 Record updated