{"id":"CVE-2026-91018","published":"2026-09-22T21:17:33.290","lastModified":"2026-09-23T19:42:48.540","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.","cvssScore":8.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-415"],"vendors":[],"products":[],"references":[{"url":"https://cgit.git.savannah.gnu.org/cgit/lwip.git","tags":[]},{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-265-02.json","tags":[]},{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-265-02","tags":[]}],"exploitRefs":[{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-265-02.json","tags":[]}],"hasPoc":true,"ai":{"summary":"The lwIP library contains a double free vulnerability that could lead to system crashes, denial of service, memory corruption, or code execution.","exploitability":"Exploitation requires the attacker to trigger the double free condition, which could be challenging without specific knowledge of the application's memory management.","blast_radius":"If exploited, the vulnerability could impact the entire system, leading to service disruption or unauthorized code execution.","remediation":"Upgrade to lwIP version 2.1.3 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","memory-corruption","dos","library-vuln"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-09-28T08:55:44.691Z"}}