CVE-2021-38111

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Published Aug 4, 2021 CVSS 3.1 · 8.8 High EPSS 1.3% KEV · Not listed

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 Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

AND

cpe:2.3:o:defcon:def_con_27_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:defcon:def_con_27:-:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2021-24584	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.

Metrics

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Adjacent Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: 1.3% (1.332% probability within 30 days)

Exploitation poc

Automatable no

Technical Impact total

References

Link	Providers
https://defcon.org/html/defcon-29/dc-29-speakers.html#kintigh
https://github.com/skintigh/defcon27_badge_sdr

History

May 5, 2025 5:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Subscriptions

Defcon Def Con 27 Def Con 27 Firmware

Weaknesses

CWE-120

Sources

CVE record Updated: May 5, 2025, 4:46 PM

Status: PUBLISHED
Assigner: mitre
Published: Aug 4, 2021, 12:00 AM
Updated: May 5, 2025, 4:46 PM
Reserved: Aug 4, 2021, 12:00 AM

View source JSON

Vulnrichment Updated: Aug 4, 2024, 1:30 AM

Updated: Aug 4, 2024, 1:30 AM

NVD Updated: Jun 17, 2026, 4:01 AM

Status: Modified
Published: Aug 4, 2021, 6:15 PM
Modified: Jun 17, 2026, 4:01 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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