Unprotected temporary directories in Wolfram Cloud may result in privilege escalation

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Summary

CVECVE-2025-11919
StatePUBLISHED
Assignercertcc
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-26 16:16:29 UTC
Updated2026-06-26 18:16:56 UTC
DescriptionThe default JVM can access files and directories under `/tmp/` including the `$TemporaryDirectory` of other users on the same cloud instance (`/tmp/UserTemporaryFiles/`). The `-init` file for the the JVM initialization exists in the vulnerable directory during the startup of the JVM. An attacker with access to the shared `/tmp/` space can preemptively create or replace `.jar` files or directories (via the `-init` file) that the victim JVM will resolve first in its classpath. By strategically placing a malicious version of a commonly used library (e.g., `commons-io`) in a location that is included in the classpath before the legitimate version, an attacker can cause the JVM to load the malicious class during startup, thereby executing the attacker's code.

Risk And Classification

Primary CVSS: v3.1 9.6 CRITICAL from ADP

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

Problem Types: CWE-552 Files or Directories Accessible to External Parties

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED9.6CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary9.6CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Wolfram Research Inc. Cloud affected 14.2 Not specified

References

ReferenceSourceLinkTags
github.com/PeterRoberge/vulnerability-wolfram-cloud-14.2/blob/main/discl... 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
www.kb.cert.org/vuls/id/553375 af854a3a-2127-422b-91ae-364da2661108 www.kb.cert.org
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