CVE-2025-69261

WasmEdge integer wrap in MemoryInstance::getSpan()'s memory size check

5.5 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: Low

Exploit likelihood

0.33%Up 0.3 points since Dec 31, 2025

What each source reports

CVE List Score used 5.5

WasmEdge integer wrap in MemoryInstance::getSpan()'s memory size check

Record: CVE-2025-69261
CVSS 4.0: 5.5 MediumCVSS: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
Weakness: CWE-190
Updated: 2026-11-02

EUVDEUVD-2025-205847 5.5

Record: EUVD-2025-205847
CVSS 4.0: 5.5 MediumCVSS: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
Updated: 2026-11-02

NVD 5.5

Record: CVE-2025-69261
CVSS 4.0: 5.5 MediumCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-190
Updated: 2026-11-02

OSV 5.5

WasmEdge integer wrap in MemoryInstance::getSpan()'s memory size check

Record: CVE-2025-69261
CVSS 4.0: 5.5 MediumCVSS: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
Weakness: CWE-190
Updated: 2026-11-02

OSVDEBIAN-CVE-2025-69261 7.5

Record: DEBIAN-CVE-2025-69261
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2025-69261 5.5

Record: UBUNTU-CVE-2025-69261
CVSS 4.0: 5.5 MediumCVSS: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
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`wasmedge` Debian:13	All versions, plus listed versions 0.14.1+dfsg-3.10.14.1+dfsg-3.20.14.1+dfsg-40.16.0+dfsg-10.16.1+dfsg-1	None known
`wasmedge` Debian:14	before 0.16.0+dfsg-1, plus listed versions 0.14.1+dfsg-3.10.14.1+dfsg-3.20.14.1+dfsg-4	0.16.0+dfsg-1
`wasmedge` Ubuntu:24.04:LTS	All versions, plus listed versions 0.13.4+dfsg-10.13.5+dfsg-10.13.5+dfsg-1build10.13.5+dfsg-1build20.13.5+dfsg-1build30.13.5+dfsg-1build4	None known
`wasmedge` Ubuntu:25.10	All versions, plus listed versions 0.14.1+dfsg-3.10.14.1+dfsg-3.1ubuntu1	None known
`wasmedge` Ubuntu:26.10	All versions, plus listed versions 0.16.1+dfsg-10.16.1+dfsg-1ubuntu1	None known
`wasmedge` Ubuntu:26.04:LTS	All versions, plus listed versions 0.14.1+dfsg-3.1ubuntu10.14.1+dfsg-3.20.14.1+dfsg-40.16.0+dfsg-10.16.1+dfsg-1	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-69261 is a medium vulnerability (CVSS 5.5) in Linuxfoundation Wasmedge, published December 30, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.33%, the 26th percentile. Fixed in wasmedge 0.16.0+dfsg-1.