CVE-2026-6862 — Libefiboot, A Component Of Efivar Denial of Service
CVE-2026-6862 — A flaw was found in libefiboot, a component of efivar. The device path node parser in libefiboot fails to validate that each node's Length field is at least 4 bytes, which is the minimum size for an EFI (Extensible Firmware Interface) device path node header. A local user could explo
What This Means For You
- If your environment is affected by CWE-674, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-6862 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
2 rules · 6 SIEM formats2 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-6862 Libefiboot Device Path Node Parser DoS Attempt
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-6862 | vulnerability | CVE-2026-6862 |
| CWE-674 | weakness | CWE-674 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 22, 2026 at 17:17 UTC |
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