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CVE Record

CVE-2021-2432: Vulnerability in the Java SE product of Oracle Java SE (component: JNDI).

Vulnerability in the Java SE product of Oracle Java SE (component: JNDI). The supported version that is affected is Java SE: 7u301. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability can also be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. CVSS 3.1 Base Score 3.7 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).

LowCVSS 3.7Not KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

This is a low-severity Oracle Java SE JNDI issue affecting Java SE 7u301. A successful attack can reduce Java availability, but sources describe exploitation as difficult and limited to partial denial of service.

Executive priority

Treat as routine legacy exposure cleanup unless Java 7u301 is internet-facing or supports critical operations. Prioritize inventory and upgrade through normal patch management.

Technical view

CVE-2021-2432 affects Oracle Java SE JDK/JRE 7u301 in the JNDI component. The CVSS 3.1 score is 3.7, with network attack vector, high complexity, no privileges, no user interaction, and low availability impact only.

Likely exposure

Exposure is most likely where legacy Java 7u301 remains in use, especially sandboxed Java Web Start or applet workloads running untrusted code, or services passing external data into affected JNDI APIs.

Exploitation context

The supplied sources do not indicate known active exploitation, and the CVE is not flagged in KEV. Oracle describes the issue as difficult to exploit and resulting only in partial denial of service.

Researcher notes

The bundle names the affected version and impact but does not provide root-cause detail, exploit primitives, or exact fixed builds. Avoid assuming broader Java versions or confidentiality/integrity impact.

Mitigation direction

  • Inventory Java SE JDK/JRE installations and identify any Java 7u301 usage.
  • Review Oracle CPU guidance for supported update paths and apply vendor-supported Java updates.
  • Check downstream advisories from platform or product vendors using embedded Java.
  • Retire sandboxed Java Web Start or applet exposure where still present.

Validation and detection

  • Confirm no production systems run Java SE JDK/JRE 7u301.
  • Identify applications using JNDI APIs with externally supplied data.
  • Review application and platform logs for unexplained Java partial availability failures.
  • Verify vendor advisories for affected third-party products are resolved.
Prepared
Confidence
medium
Sources
6

Public sources used

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

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CVE-2021-2432 mapping review

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

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Vulnerability profileCVE Program record
Severity
Low
CVSS
3.7 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

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.

1CVSS vectors
0Timeline events
0ADP providers
6Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
3.7CVSS 3.1LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L2.21.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

3.7Low
CVSS 3.1 vector shape for CVE-2021-2432Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Oracle CorporationJava SE JDK and JREJava SE:7u301Listed
Weakness

CWE details

No CWE listed

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