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CVE Record

CVE-2026-21932: Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of O...

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: AWT, JavaFX). Supported versions that are affected are Oracle Java SE: 8u471, 8u471-b50, 8u471-perf, 11.0.29, 17.0.17, 21.0.9, 25.0.1; Oracle GraalVM for JDK: 17.0.17 and 21.0.9; Oracle GraalVM Enterprise Edition: 21.3.16. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. 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 does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator). CVSS 3.1 Base Score 7.4 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N).

HighCVSS 7.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This flaw can let an unauthenticated remote attacker alter or destroy critical data when a user interacts with untrusted code in certain sandboxed Java client deployments. It primarily concerns Java Web Start applications and applets relying on the Java sandbox, not typical servers running only administrator-installed trusted code.

Executive priority

Prioritize affected user-facing Java clients that process untrusted code. Accelerate updates or isolation for those systems because successful exploitation can modify or delete critical data. Trusted-code-only servers are outside Oracle's stated applicability, so validate architecture before declaring broad enterprise exposure.

Technical view

CVE-2026-21932 affects AWT and JavaFX in specified Oracle Java SE and GraalVM releases. Exploitation is network-accessible, low complexity, requires no privileges, and needs user interaction. Successful exploitation can cross security scope and cause high-integrity impact without stated confidentiality or availability impact. CVSS 3.1: 7.4.

Likely exposure

Highest exposure exists where affected releases run sandboxed Java Web Start applications or applets that load untrusted internet-originated code. Oracle states the vulnerability does not apply to typical server deployments that load and run only trusted administrator-installed code.

Exploitation context

The supplied sources describe the vulnerability as easily exploitable but requiring interaction by someone other than the attacker. The CVE is not listed as KEV in the bundle, and no supplied evidence establishes active exploitation. Treat exploit activity as unconfirmed.

Researcher notes

The weakness is categorized as CWE-1287. The supplied material identifies AWT and JavaFX but does not provide root-cause details, proof-of-concept information, or confirmed exploitation. Assessment should focus on runtime version, trust boundary, sandbox reliance, content origin, and required user interaction without attempting production exploitation.

Mitigation direction

  • Identify affected Oracle Java SE and GraalVM versions across client environments.
  • Apply applicable Oracle CPU or downstream vendor security updates after compatibility testing.
  • Disable unnecessary Java Web Start, applet, or untrusted-code workflows.
  • Restrict untrusted network content from reaching remaining sandbox-dependent Java clients.

Validation and detection

  • Inventory runtime versions and distinguish client deployments from trusted-code-only servers.
  • Confirm whether Java Web Start, applets, AWT, or JavaFX process untrusted content.
  • Verify installed updates against Oracle or the relevant downstream vendor advisory.
  • Retest affected applications while ensuring sandbox-dependent untrusted workflows remain disabled or controlled.
Prepared
Confidence
high
Sources
4

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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cwe · low confidence lookup

CWE-1287: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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cve · low confidence lookup

CVE-2026-21932 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
High
CVSS
7.4 (3.1)
Known Exploited
No
Published

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

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.

2CVSS vectors
5Timeline events
3ADP providers
11Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

2 official scores

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
7.4CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N2.84oracle
7.4CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N2.84redhat-SADP

Vulnerability scoring details

Base CVSS 3.1 score

7.4High
CVSS 3.1 vector shape for CVE-2026-21932Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. ADP timelineredhat-SADP

    Reported to Red Hat.

  3. ADP timelineredhat-SADP

    Made public.

  4. CVE publishedCVE Program

    The CVE record was published.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
siemens-SADPADP container
redhat-SADPopenjdk: Enhance Handling of URIs (Oracle CPU 2026-01)
other:Red Hat severity ratingcvssV3_1
  • 2026-01-15T12:01:50.512Z: Reported to Red Hat.
  • 2026-01-20T21:21:00.000Z: Made public.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Oracle CorporationOracle Java SE8u471, 8u471-b50, 8u471-perf, 11.0.29, 17.0.17, 21.0.9, 25.0.1Listed
Oracle CorporationOracle GraalVM for JDK17.0.17, 21.0.9Listed
Oracle CorporationOracle GraalVM Enterprise Edition21.3.16Listed
Weakness

CWE details

CWE-1287

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

CWE-1287 · source CWE mapping

Improper Validation of Specified Type of Input

Improper Validation of Specified Type of Input represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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