CVE-2026-91018

Summary

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.

Affected Software

Weaknesses

• CWE-415: CWE-415 Double free

References

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

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