How severe is CVE-2021-46145?

CVE-2021-46145 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2021-46145 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46145?

CVE-2021-46145 affects Honda Civic 2012. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-46145?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-46145 published?

CVE-2021-46145 was published on 2022-01-06 and last updated on 2026-06-17.

CVE-2021-46145

CVE-2021-46145 is a medium-severity vulnerability in Honda Civic 2012 with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-294.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 2.9
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-294
Affected product: Honda Civic 2012
Published: 2022-01-06
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-46145?: 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.
How severe is CVE-2021-46145?: CVE-2021-46145 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2021-46145 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46145?: CVE-2021-46145 affects Honda Civic 2012. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-46145?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-46145 published?: CVE-2021-46145 was published on 2022-01-06 and last updated on 2026-06-17.

References

Affected products (1)

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

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