CVE-2012-5781

CVE-2012-5781 is a medium-severity vulnerability in Amazon Elastic Load Balancing with a CVSS 2.0 base score of 5.8. 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-20.

Key facts

Description

Amazon Elastic Load Balancing API Tools does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate, related to overriding the default JDK X509TrustManager.

Frequently asked questions

What is CVE-2012-5781?
Amazon Elastic Load Balancing API Tools does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate, related to overriding the default JDK X509TrustManager.
How severe is CVE-2012-5781?
CVE-2012-5781 has a CVSS 2.0 base score of 5.8, rated medium severity.
Is CVE-2012-5781 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-5781?
CVE-2012-5781 primarily affects Amazon Elastic Load Balancing. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-5781?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-5781 published?
CVE-2012-5781 was published on 2012-11-04 and last updated on 2026-06-16.

References

Affected products (11)

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