MajorCritical vulnerability

CVE-2026-91018 (CVSS 8.7)

NVD · officialPublished Sep 22, 2026Risk 37/100EPSS 0.2%

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.

Technical details

CVSS

8.7

AV:AdjacentAC:LowPR:NoneUI:None

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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