CVE-2021-46145

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-01-06 · updated 2026-06-17
Weakness: CWE-294

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

Honda Civic 2012: all versions

References

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
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

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