{"id":"CVE-2025-11919","title":"The default JVM can access files and directories under `/tmp/` including the `$TemporaryDirectory` of other users on the same cloud instance (`/tmp/UserTemporaryFiles/`)","summary":"The default JVM can access files and directories under `/tmp/` including the `$TemporaryDirectory` of other users on the same cloud instance (`/tmp/UserTemporaryFiles/`).  The `-init` file for the the JVM initialization exists in the vul…","severity":"critical","cvss":9.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","published":"2026-06-26","updated":"2026-09-29","sourceUpdated":"2026-09-29T19:10:00.160","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-11919","references":[{"url":"https://github.com/PeterRoberge/vulnerability-wolfram-cloud-14.2/blob/main/disclosure.md","label":"cret@cert.org"},{"url":"https://www.kb.cert.org/vuls/id/553375","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/PeterRoberge/vulnerability-wolfram-cloud-14.2/blob/main/disclosure.md","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00407,"epssPercentile":0.32431,"ingestedAt":"2026-09-29T19:44:04.093Z","slug":"CVE-2025-11919","body":"## Overview\n\nThe 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":52.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}