CVE-2021-46145

View on CVE.org

Published Jan 6, 2022 CVSS 3.1 · 5.3 Medium EPSS 3.4% KEV · Not listed

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.

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 [-]

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

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-2021-32845	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.

Metrics

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.

Exploit prediction score: 3.4% (3.365% probability within 30 days)

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

Jul 15, 2025 1:45 PM Scoring metrics updated View changes

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

Subscriptions

Honda Civic 2012

Weaknesses

CWE-294

Sources

CVE record Updated: Aug 4, 2024, 5:02 AM

Status: PUBLISHED
Assigner: mitre
Published: Jan 6, 2022, 5:30 AM
Updated: Aug 4, 2024, 5:02 AM
Reserved: Jan 6, 2022, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 4:14 AM

Status: Modified
Published: Jan 6, 2022, 6:15 AM
Modified: Jun 17, 2026, 4:14 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2022-01-06T05:30:37.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "http://starvlab.qianxin.com/?p=409"}, {"tags": ["x_refsource_MISC"], "url": "https://twitter.com/Kevin2600/status/1475482656871571459?s=20"}, {"tags": ["x_refsource_MISC"], "url": "https://twitter.com/Kevin2600/status/1472070749208780804?s=20"}, {"tags": ["x_refsource_MISC"], "url": "https://tiger-team-1337.blogspot.com/2022/01/honda-civic-keyfob-system-affected-by.html"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2021-46145", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "http://starvlab.qianxin.com/?p=409", "refsource": "MISC", "url": "http://starvlab.qianxin.com/?p=409"}, {"name": "https://twitter.com/Kevin2600/status/1475482656871571459?s=20", "refsource": "MISC", "url": "https://twitter.com/Kevin2600/status/1475482656871571459?s=20"}, {"name": "https://twitter.com/Kevin2600/status/1472070749208780804?s=20", "refsource": "MISC", "url": "https://twitter.com/Kevin2600/status/1472070749208780804?s=20"}, {"name": "https://tiger-team-1337.blogspot.com/2022/01/honda-civic-keyfob-system-affected-by.html", "refsource": "MISC", "url": "https://tiger-team-1337.blogspot.com/2022/01/honda-civic-keyfob-system-affected-by.html"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:02:11.585Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "http://starvlab.qianxin.com/?p=409"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://twitter.com/Kevin2600/status/1475482656871571459?s=20"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://twitter.com/Kevin2600/status/1472070749208780804?s=20"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://tiger-team-1337.blogspot.com/2022/01/honda-civic-keyfob-system-affected-by.html"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2021-46145", "datePublished": "2022-01-06T05:30:37.000Z", "dateReserved": "2022-01-06T00:00:00.000Z", "dateUpdated": "2024-08-04T05:02:11.585Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:h:honda:civic_2012:-:*:*:*:*:*:*:*", "matchCriteriaId": "CCCCEB59-3267-4A20-B47A-D1BAD28874F9", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "El subsistema del llavero en los veh\u00edculos Honda Civic 2012 permite un ataque de repetici\u00f3n para el desbloqueo. Esto est\u00e1 relacionado con un c\u00f3digo rodante que no caduca y la resincronizaci\u00f3n del contador."}], "id": "CVE-2021-46145", "lastModified": "2026-06-17T04:14:34.830", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 2.9, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:A/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 5.5, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-01-06T06:15:07.137", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "http://starvlab.qianxin.com/?p=409"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://tiger-team-1337.blogspot.com/2022/01/honda-civic-keyfob-system-affected-by.html"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://twitter.com/Kevin2600/status/1472070749208780804?s=20"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://twitter.com/Kevin2600/status/1475482656871571459?s=20"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "http://starvlab.qianxin.com/?p=409"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://tiger-team-1337.blogspot.com/2022/01/honda-civic-keyfob-system-affected-by.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://twitter.com/Kevin2600/status/1472070749208780804?s=20"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://twitter.com/Kevin2600/status/1475482656871571459?s=20"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-294"}], "source": "nvd@nist.gov", "type": "Primary"}]}