CVE-2013-0443

CVE-2013-0443 is a medium-severity vulnerability in Oracle Jre with a CVSS 2.0 base score of 4.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 through Update 11, 6 through Update 38, 5.0 through Update 38, and 1.4.2_40 and earlier, and OpenJDK 6 and 7, allows remote attackers to affect confidentiality and integrity via vectors related to JSSE. NOTE: the previous information is from the February 2013 CPU. Oracle has not commented on claims from another vendor that this issue is related to incorrect validation of Diffie-Hellman keys, which allows remote attackers to conduct a "small subgroup attack" to force the use of weak session keys or obtain sensitive information about the private key.

Frequently asked questions

What is CVE-2013-0443?
Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 through Update 11, 6 through Update 38, 5.0 through Update 38, and 1.4.2_40 and earlier, and OpenJDK 6 and 7, allows remote attackers to affect confidentiality and integrity via vectors related to JSSE. NOTE: the previous information is from the February 2013 CPU. Oracle has not commented on claims from another vendor that this issue is related to incorrect validation of Diffie-Hellman keys, which allows remote attackers to conduct a "small subgroup attack" to force the use of weak session keys or obtain sensitive information about the private key.
How severe is CVE-2013-0443?
CVE-2013-0443 has a CVSS 2.0 base score of 4.0, rated medium severity.
Is CVE-2013-0443 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-0443?
CVE-2013-0443 primarily affects Oracle Jre. In total, 241 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-0443?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-0443 published?
CVE-2013-0443 was published on 2013-02-02 and last updated on 2026-06-16.

References

Affected products (241)

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