CVE-2004-2540: n/a vulnerability

CVE-2004-2540: readObject in (1) Java Runtime Environment (JRE) and (2) Software Development Kit (SDK) 1.4.0 through 1.4.2...

readObject in (1) Java Runtime Environment (JRE) and (2) Software Development Kit (SDK) 1.4.0 through 1.4.2_05 allows remote attackers to cause a denial of service (JVM unresponsive) via crafted serialized data.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 8, 2024, 01:29 UTC (UTC+00:00)

Security readout for executives and security teams

This CVE affects very old Java Runtime Environment and SDK releases. A remote attacker could make the Java Virtual Machine become unresponsive by sending crafted serialized data. The business risk is service disruption on legacy systems, not confirmed data theft or code execution based on the provided sources. Exposure is likely limited to legacy systems still running Java 1.4.0 through 1.4.2_05 and processing untrusted serialized data. Modern supported Java deployments are unlikely to be affected, but asset inventories should verify this rather than assume. Treat this as a legacy-technology risk. It is not flagged as actively exploited in the provided sources, but any exposed Java 1.4 system may be fragile and difficult to support. Prioritize discovery, retirement, or isolation. Mitigation focus: Inventory systems for JRE or SDK 1.4.0 through 1.4.2_05.; Check the vendor advisory for the supported fixed or replacement version.; Retire or isolate unsupported Java 1.4 deployments where possible..

Prepared: Jun 29, 2026, 17:01 UTC (UTC+00:00)

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

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Nov 16, 2005, 07:37 UTC (UTC+00:00)

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

2Source links

CVSS and timeline data

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

Source materials

CVE List V5 sourceCVE List V5
jre-sdk-readobject-dos(20027)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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