CVE-2026-91018— Double Free in lwIP (lightweight IP)
Quick assessment
Affected
lwIP lwIP API
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
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.
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I. Basic Information for CVE-2026-91018
Vulnerability Information
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Vulnerability Title
Double Free in lwIP (lightweight IP)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
双重释放
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-91018
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-91018 (3)
IV. Related Vulnerabilities
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V. Comments for CVE-2026-91018
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