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High 8.8Published Sep 22, 2026
CVE-2026-91018Double Free in lwIP (lightweight IP)
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-415
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- icscert
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 23, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
lwIP lwIP API lwip:api (from the name) | from 2.0.1 through 2.2.1 | CNA record |
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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.