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CVE-2026-16439Eclipse OpenJ9 : Using -Xtrace to trace method arguments can lead to buffer underflow

In Eclipse OpenJ9 versions up to 0.60, using -Xtrace to trace method arguments can lead to buffer underflow.

5.8 MEDIUMEPSS 0.43%Not in KEVNVD: Analyzed

Last updated: 2026-10-24 19:10 UTC

OverviewCVSS details

5.8MEDIUMCVSS 4.0

Score source: eclipse (CNA)
NVD status: Analyzed
Published: Jul 21, 2026
Assigner: eclipse

Affected

OpenJ9 (Eclipse Foundation)

Versions: 0.8.0 before 0.60.0
Fixed in: 0.60.0

Exploitation

Public exploit: None listed
CISA KEV: Not listed
KEV due date: —
SSVC: Exploitation none · Automatable no · Impact total

EPSS · FIRST, scored Nov 7

0.43%chance of exploitation in 30 days

Higher than 37.49% of CVEs

CVSS 4.0 · eclipse (CNA)

5.8Medium

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:N/VI:H/VA:H/SC:N/SI:L/SA:L

Attack vector: Network
Attack complexity: High
Attack requirements: Present
Privileges required: Low
User interaction: Active
Confidentiality impact: None
Integrity impact: High
Availability impact: High
Confidentiality (other systems): None
Integrity (other systems): Low
Availability (other systems): Low

CVSS 3.1 · NVD

9.1Critical

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

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: High
Availability impact: High

NVD status: Analyzed

Overview Affected Products References

Overview

Severity

Score	Severity	Version	Vector String
5.8	MEDIUM	4.0eclipse (CNA)	CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:N/VI:H/VA:H/SC:N/SI:L/SA:L
9.1	CRITICAL	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Details

CVE ID: CVE-2026-16439
Status: Analyzed
Assigner (CNA): eclipse
Published: Jul 21, 2026
Last modified: 2026-10-24 19:10 UTC
Weaknesses: CWE-124 · Buffer underwrite ('buffer underflow')

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 08:37 UTC.