CVE-2026-87286Network attack vectorHinoki check available

Unauthenticated runtime takeover

Published Sep 15, 2026 · Updated Sep 15, 2026

Unspecified flaw in Oracle GraalVM 25.0.4.1 Compiler allows remote attackers to take over the runtime through HTTP. Oracle has not published the affected compiler routine or explained how HTTP-supplied input reaches it or which unsafe operation occurs. Exploitation requires no credentials or user interaction but has high attack complexity; success compromises runtime confidentiality, integrity, and availability.

CVSS severity8.1
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
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Summary

What happened

Unspecified flaw in Oracle GraalVM 25.0.4.1 Compiler allows remote attackers to take over the runtime through HTTP. Oracle has not published the affected compiler routine or explained how HTTP-supplied input reaches it or which unsafe operation occurs. Exploitation requires no credentials or user interaction but has high attack complexity; success compromises runtime confidentiality, integrity, and availability.

The record

CVE
CVE-2026-87286
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
Oracle Corporation
Product
Oracle GraalVM
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=25.0.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Oracle GraalVMversion=25.0.4.1

Published CVSS scores

8.1Oracle CorporationCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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