CVE-2021-46145 json
The keyfob subsystem in Honda Civic 2012 vehicles allows a replay attack for unlocking.
published 2022-01-06 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-32845
- cvss
- 5.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.4%
- EPSS 3.4% chance of exploitation in 30 days, percentile 88%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
3.36% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 2.9 | AV:A/AC:M/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-294 Authentication Bypass by Capture-replay
References
-
starvlab.qianxin.com
/?p=409
third-party-advisory
-
twitter.com
/Kevin2600/status/1475482656871571459?s=20
third-party-advisory
-
twitter.com
/Kevin2600/status/1472070749208780804?s=20
third-party-advisory
-
tiger-team-1337.blogspot.com
/2022/01/honda-civic-keyfob-system-affected-by.html
third-party-advisory
Sources
- CVE List CVE-2021-46145
- NVD CVE-2021-46145
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.