How severe is CVE-2012-4012?

CVE-2012-4012 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2012-4012 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-4012?

CVE-2012-4012 affects Cybozu Kunai. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2012-4012?

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

When was CVE-2012-4012 published?

CVE-2012-4012 was published on 2012-09-08 and last updated on 2026-06-16.

CVE-2012-4012

CVE-2012-4012 is a medium-severity vulnerability in Cybozu Kunai with a CVSS 2.0 base score of 4.3. 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-200.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Cybozu Kunai
Published: 2012-09-08
Last modified: 2026-06-16

Description

The WebView class in the Cybozu KUNAI application before 2.0.6 for Android allows remote attackers to execute arbitrary JavaScript code, and obtain sensitive information, via a crafted application that places this code into a local file associated with a file: URL.

Frequently asked questions

What is CVE-2012-4012?: The WebView class in the Cybozu KUNAI application before 2.0.6 for Android allows remote attackers to execute arbitrary JavaScript code, and obtain sensitive information, via a crafted application that places this code into a local file associated with a file: URL.
How severe is CVE-2012-4012?: CVE-2012-4012 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2012-4012 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-4012?: CVE-2012-4012 affects Cybozu Kunai. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2012-4012?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-4012 published?: CVE-2012-4012 was published on 2012-09-08 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:cybozu:kunai:*:-:*:*:*:android:*:*

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