LiveActive security incident?Get immediate response
CVE Record

CVE-2013-2456: Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 21 and...

Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 21 and earlier, 6 Update 45 and earlier, and 5.0 Update 45 and earlier, and OpenJDK 7, allows remote attackers to affect confidentiality via unknown vectors related to Serialization. NOTE: the previous information is from the June 2013 CPU. Oracle has not commented on claims from another vendor that this issue is related to improper access checks for subclasses in the ObjectOutputStream class.

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2013-2456 is an old Java Runtime Environment confidentiality issue tied to serialization. The public record does not explain the attack path, only that remote attackers could affect confidentiality in affected Oracle Java SE and OpenJDK 7 versions. Treat it mainly as a legacy Java exposure problem. Exposure is most likely on legacy desktops, servers, appliances, or bundled applications still running affected Java SE or OpenJDK 7 runtimes. Modern supported Java deployments are less likely exposed, but embedded or vendor-managed Java copies need explicit inventory. Prioritize this when legacy Java remains in production or on managed endpoints. It is not KEV-listed in the provided sources, but obsolete Java runtimes create durable exposure and are often missed by normal patch reporting. Mitigation focus: Inventory all Oracle Java SE and OpenJDK runtimes, including bundled application copies.; Apply vendor security updates that include the June 2013 Java CPU fixes.; Remove unsupported Java 5, Java 6, Java 7, and obsolete browser plugins where possible..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2013-2456 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
7Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.