CVE-2025-11919Public exploitNetwork attack vector

Cross-tenant code execution via JVM classpath poisoning

Published Jun 26, 2026 · Updated Jun 26, 2026

Classpath injection in Wolfram Cloud 14.2 allows remote authenticated users to execute code as another tenant during JVM startup. The JLink initialization file resides in a shared temporary directory, allowing a racing tenant to replace it and prepend an attacker-controlled JAR to the victim JVM classpath. Exploitation requires basic cloud access, placement on the same instance, and anticipation of another tenant launching Java; successful poisoning runs code with that tenant's permissions.

CVSS severity9.6
Critical
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Classpath injection in Wolfram Cloud 14.2 allows remote authenticated users to execute code as another tenant during JVM startup. The JLink initialization file resides in a shared temporary directory, allowing a racing tenant to replace it and prepend an attacker-controlled JAR to the victim JVM classpath. Exploitation requires basic cloud access, placement on the same instance, and anticipation of another tenant launching Java; successful poisoning runs code with that tenant's permissions.

The record

CVE
CVE-2025-11919
Published
Jun 26, 2026
Updated
Jun 26, 2026
Vendor
Wolfram Research
Product
Wolfram Cloud
Classifications
CWE-552, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 26, 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=14.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Wolfram Research · Wolfram Cloudversion=14.2

Published CVSS scores

9.6CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-552Files or Directories Accessible to External Parties
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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