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.
Advisories

No advisories yet.

Fixes

Solution

Users of lwIP are encouraged to update their version of lwIP using the repository found at  https://cgit.git.savannah.gnu.org/cgit/lwip.git . The commit identifier that contains the fix is f873b6295933e4149a2132adf3e9a2d2a676a5ec.


Workaround

No workaround given by the vendor.

History

Wed, 23 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 23 Sep 2026 11:45:00 +0000

Type Values Removed Values Added
First Time appeared Lwip
Lwip lwip
Vendors & Products Lwip
Lwip lwip

Tue, 22 Sep 2026 20:45:00 +0000

Type Values Removed Values Added
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.
Title Double Free in lwIP (lightweight IP)
Weaknesses CWE-415
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: icscert

Published:

Updated: 2026-09-23T13:05:15.963Z

Reserved: 2026-09-14T16:40:45.500Z

Link: CVE-2026-91018

cve-icon Vulnrichment

Updated: 2026-09-23T13:03:25.938Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-22T21:17:33.290

Modified: 2026-09-23T19:42:48.540

Link: CVE-2026-91018

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-23T09:00:10Z

Weaknesses