Vulnerability · Published Dec 30, 2025 · Assigned by GitHub_M

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

Medium 5.5

In plain English

A medium-severity integer overflow in WasmEdge from WasmEdge. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)5.5Medium

Exploit odds (30 days)0.3%top 73.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:13	wasmedge	no fix listed	DEBIAN-CVE-2025-69261
Debian:14	wasmedge	0.16.0+dfsg-1	DEBIAN-CVE-2025-69261
Ubuntu:24.04:LTS	wasmedge	no fix listed	UBUNTU-CVE-2025-69261
Ubuntu:25.10	wasmedge	no fix listed	UBUNTU-CVE-2025-69261
Ubuntu:26.04:LTS	wasmedge	no fix listed	UBUNTU-CVE-2025-69261
Ubuntu:26.10	wasmedge	no fix listed	UBUNTU-CVE-2025-69261

Affected products (as reported)

Vendor	Product	Versions
WasmEdge	WasmEdge	< 0.16.0-alpha.3

Weakness: CWE-190 · 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

References

https://github.com/WasmEdge/WasmEdge/security/advisories/GHSA-89fm-8mr7-gg4m x_refsource_CONFIRM
https://github.com/WasmEdge/WasmEdge/commit/37cc9fa19bd23edbbdaa9252059b17f191fa4d17 x_refsource_MISC