What is CVE-2025-69261?

CVE-2025-69261 is a high-severity vulnerability in Linuxfoundation Wasmedge, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2025-12-30.

How severe is CVE-2025-69261?

High severity. CVSS v3 base score is 7.5 out of 10.

Integer overflow in Linuxfoundation Wasmedge

CVE-2025-69261

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.

Vulnerability class: Integer Overflow

EPSS: 0.003 (20.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linuxfoundation Wasmedge — versions 0.16.0
Wasmedge — versions < 0.16.0-alpha.3

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2025-69261?: CVE-2025-69261 is a high-severity vulnerability in Linuxfoundation Wasmedge, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2025-12-30.
How severe is CVE-2025-69261?: High severity. CVSS v3 base score is 7.5 out of 10.