CVE-2021-46145 - Vulnerability Details - OpenCVE

Description

The keyfob subsystem in Honda Civic 2012 vehicles allows a replay attack for unlocking. This is related to a non-expiring rolling code and counter resynchronization.

Published: 2022-01-06

Score: 5.3 Medium

EPSS: 3.4% Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

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 [-]

cpe:2.3:h:honda:civic_2012:-:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-32845	The keyfob subsystem in Honda Civic 2012 vehicles allows a replay attack for unlocking. This is related to a non-expiring rolling code and counter resynchronization.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

Access Vector Adjacent Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.03365.

Key SSVC decision points have not yet been added.

References

Link	Providers
http://starvlab.qianxin.com/?p=409
https://tiger-team-1337.blogspot.com/2022/01/honda-civic-keyfob-system-affected-by.html
https://twitter.com/Kevin2600/status/1472070749208780804?s=20
https://twitter.com/Kevin2600/status/1475482656871571459?s=20

History

Tue, 15 Jul 2025 13:45:00 +0000

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.05369}`	epss `{'score': 0.04075}`

Subscriptions

Honda Civic 2012

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2022-01-06T05:30:37.000Z

Updated: 2024-08-04T05:02:11.585Z

Reserved: 2022-01-06T00:00:00.000Z

Link: CVE-2021-46145

Vulnrichment

No data.

NVD

Status : Modified

Published: 2022-01-06T06:15:07.137

Modified: 2026-06-17T04:14:34.830

Link: CVE-2021-46145

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-294
Authentication Bypass by Capture-replay

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