How severe is CVE-2013-5456?

CVE-2013-5456 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2013-5456 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-5456?

CVE-2013-5456 affects Ibm Java. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2013-5456?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2013-5456 published?

CVE-2013-5456 was published on 2013-11-24 and last updated on 2026-06-16.

CVE-2013-5456

CVE-2013-5456 is a critical-severity vulnerability in Ibm Java with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ibm Java
Published: 2013-11-24
Last modified: 2026-06-16

Description

The com.ibm.rmi.io.SunSerializableFactory class in IBM Java SDK 7.0.0 before SR6 allows remote attackers to bypass a sandbox protection mechanism and execute arbitrary code via vectors related to deserialization inside the AccessController doPrivileged block.

Frequently asked questions

What is CVE-2013-5456?: The com.ibm.rmi.io.SunSerializableFactory class in IBM Java SDK 7.0.0 before SR6 allows remote attackers to bypass a sandbox protection mechanism and execute arbitrary code via vectors related to deserialization inside the AccessController doPrivileged block.
How severe is CVE-2013-5456?: CVE-2013-5456 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2013-5456 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-5456?: CVE-2013-5456 affects Ibm Java. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2013-5456?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2013-5456 published?: CVE-2013-5456 was published on 2013-11-24 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:ibm:java:7.0.0.0:*:*:*:*:*:*:*

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