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

Published 2025-12-30 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.003 (23.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

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

github.com/WasmEdge/WasmEdge/security/advisories/GHSA-89fm-8mr7-gg4m (Vendor Advisory)
github.com/WasmEdge/WasmEdge/commit/37cc9fa19bd23edbbdaa9252059b17f191fa4d17 (Patch)

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.