CVE-2026-91018

HIGHCVSS 8.8

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.

Timeline

Published:September 22nd, 2026 9:17 PM

Last modified:September 23rd, 2026 7:42 PM

CVSS Scoring

CVSS v3: 8.8 (HIGH)

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-415

References & Reports

Advisories, patches, and third-party reports

https://cgit.git.savannah.gnu.org/cgit/lwip.git
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-265-02.json
https://www.cisa.gov/news-events/ics-advisories/icsa-26-265-02

Source: NIST NVD · Data may lag official sources by up to one minute