CVE-2012-5456

CVE-2012-5456 is a medium-severity vulnerability in Zoner Zoner Antivirus Free 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-310.

Key facts

Description

The Zoner AntiVirus Free application for Android does not verify that the server hostname matches a domain name in the subject's Common Name (CN) field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate, as demonstrated by a server used for updating virus signature files.

Frequently asked questions

What is CVE-2012-5456?
The Zoner AntiVirus Free application for Android does not verify that the server hostname matches a domain name in the subject's Common Name (CN) field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate, as demonstrated by a server used for updating virus signature files.
How severe is CVE-2012-5456?
CVE-2012-5456 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2012-5456 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-5456?
CVE-2012-5456 primarily affects Zoner Zoner Antivirus Free. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-5456?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-5456 published?
CVE-2012-5456 was published on 2012-10-24 and last updated on 2026-06-16.

References

Affected products (2)

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