CVE-2025-4447

Local JVM compromise via property-file length miscalculation

Published May 9, 2025 · Updated May 10, 2025

Stack-based buffer overflow in Eclipse OpenJ9 0.8.0 through 0.49.0 allows local users to compromise an OpenJDK 8 JVM at startup. In runtime/util/propsfile.c, props_file_open gives propsfile_read_text a remaining-buffer length calculated with reversed pointer subtraction, so continued property lines can overrun the 1,024-byte stack buffer. A low-privileged user must be able to modify a properties file read when the JVM starts; the overflow can corrupt JVM data and control flow or terminate the process.

CVSS severity7.0
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Eclipse OpenJ9 0.8.0 through 0.49.0 allows local users to compromise an OpenJDK 8 JVM at startup. In runtime/util/propsfile.c, props_file_open gives propsfile_read_text a remaining-buffer length calculated with reversed pointer subtraction, so continued property lines can overrun the 1,024-byte stack buffer. A low-privileged user must be able to modify a properties file read when the JVM starts; the overflow can corrupt JVM data and control flow or terminate the process.

The record

CVE
CVE-2025-4447
Published
May 9, 2025
Updated
May 10, 2025
Vendor
The Eclipse Foundation
Product
Eclipse OpenJ9
Classifications
CWE-121
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 9, 2025CVE publishedPublication date reported by the CVE source.
  2. May 10, 2025Record 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=0.8.0 <=0.49.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Eclipse Foundation · Eclipse OpenJ9version=0.8.0 <=0.49.0

Published CVSS scores

7.0Eclipse FoundationCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:H/SC:H/SI:N/SA:N
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow

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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