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CVE-2026-91018: CWE-415 Double free in lwIP lwIP API

0
High
VulnerabilityCVE-2026-91018cvecve-2026-91018cwe-415
Published: 09/22/2026 (09/22/2026, 20:25:33 UTC)
Source: CVE Database V5
Vendor/Project: lwIP
Product: lwIP API

Description

lwIP (Lightweight IP) has a double free vulnerability, which could crash the system, cause a DoS, memory corruption, or allow code execution on the victim system.

CVSS v3.1

Score 8.8high

Attack Vector
Adjacent Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

lwIP

lwIP API

Affected versions
>=2.0.1 <=2.2.1

Technical Details

Data Version
5.2
Assigner Short Name
icscert
Date Reserved
2026-09-14T16:40:45.500Z
Cvss Version
3.1
State
PUBLISHED

Threat ID: 6ab3323bf7a7c5410620011e

Added to database: 09/23/2026, 01:58:19 UTC

Last updated: 09/23/2026, 01:58:19 UTC

Views: 1

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