CVE-2021-38111
HIGH
8.8
CVSS Score
Published: August 4, 2021 at 12:00 AM UTC
Updated: June 17, 2026 at 04:01 AM UTC
2 products affected across 1 vendorDef Con 27 FirmwareDef Con 27
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Severity
HIGH8.8
Exploit prediction
EPSS 1%
SSVC
PoC
Description
The DEF CON 27 badge allows remote attackers to exploit a buffer overflow by sending an oversized packet via the NFMI (Near Field Magnetic Induction) protocol.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Def Con 27· Defcondevice
80%All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (2)
ExploitThird Party Advisory
Source: [email protected]
https://defcon.org/html/defcon-29/dc-29-speakers.html#kintighSSVC — Action Prioritization
SSVCPoCNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
8.8HIGHCISA-ADP
- Attack Vector
- ADJACENT_NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-120
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