What is the CVSS score of CVE-2026-1188?

CVE-2026-1188 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2026-1188?

Within 24 hours: Identify all systems and applications using Eclipse OMR and confirm affected versions. Within 7 days: Apply the available vendor patch to all affected systems following a staged rollout plan with testing in non-production environments first. Within 30 days: Complete patch deployment across entire infrastructure and validate remediation through vulnerability scanning.

Omr CVE-2026-1188

CRITICAL

Incorrect Calculation of Buffer Size (CWE-131)

2026-01-29 emo@eclipse.org

Buffer Overflow Omr Suse Eclipse

9.8

CVSS 3.1 · NVD

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Call processor feature API with undersized buffer
Exploit

Trigger separator miscalculation in buffer bounds check
Execution

Write beyond allocated memory
Impact

Execute arbitrary code

Vulnerability Assessment

Weakness	CWE CWE-131 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Buffer size calculation
Exploitation Conditions	Attacker must invoke Eclipse OMR port library's processor feature enumeration function (since 0.2.0, before 0.8.0) with deliberately undersized output buffer that omits separator byte accounting. Vulnerable in any application linking affected OMR versions.
Impact	CVSS 9.8. Eclipse OMR is the shared runtime used by Eclipse OpenJ9 JVM — affects all Java applications running on OpenJ9.
Exploit ScenarioDerived	On specific hardware configurations, the buffer overflow in feature name enumeration corrupts adjacent memory, potentially enabling code execution.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.

Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Buffer size miscalculation in Eclipse OMR port library since 0.2.0. An API function returning processor feature names has incorrect size allocation. Patch available.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 22:00 CVSS 9.8

Incorrect buffer size in Eclipse OMR runtime library.

RemediationAI

Update Eclipse OMR.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

CWE-131 incorrect buffer size calculation. The processor feature name API allocates insufficient buffer for certain hardware configurations.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.8 CRITICAL

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

SUSE CRITICAL

Primary rating from NVD.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Patch released

Feb 09, 2026 - 15:20 nvd

Patch available

CVE Published

Jan 29, 2026 - 09:16 nvd

CRITICAL 9.8

DescriptionCVE.org

In the Eclipse OMR port library component since release 0.2.0, an API function to return the textual names of all supported processor features was not accounting for the separator inserted between processor features. If the output buffer supplied to this function was incorrectly sized, failing to account for the separator when determining when a write to the buffer was safe could lead to a buffer overflow. This issue is fixed in Eclipse OMR version 0.8.0.

Executive ViewAI

Why It Matters

A critical vulnerability (CVSS 9.8) in Eclipse OMR's processor feature API could allow attackers to execute arbitrary code or cause denial of service on systems running affected versions. Organizations using Eclipse OMR 0.2.0 or later must prioritize patching to prevent potential compromise of applications and infrastructure.

Business Impact: Severe

Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score

0.0%

Top 95% exploitable

Data Quality

5 sources

Confidence: Medium

NVD

CVE.org

EPSS Vendor

GitHub

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity CRITICAL

CISA KEV No

Public POC No

EPSS 0.0%

Patch available Yes

Active threat No

Deciding rule

CRITICAL severity

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Out-of-Cycle

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact

Very High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +49

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Affected Products (CPE)CVE.org

cpe:2.3:a:eclipse:omr:*:*:*:*:*:*:*:*

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Same weakness CWE-131 – Incorrect Calculation of Buffer Size

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CVE-2020-0796 CRITICAL POC

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CVE-2012-1889 HIGH POC

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Vendor StatusVendor

SUSE

Severity: Critical

Product	Status
SUSE Linux Enterprise Module for Package Hub 15 SP7	Fixed
openSUSE Tumbleweed	Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS	Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS	Affected
SUSE Linux Enterprise Module for Legacy 15 SP7	Affected

References

Advisories & patches

PATCH https://github.com/eclipse-omr/omr/pull/8082 ADVISORY https://vuldb.com/?id.343363 ADVISORY https://www.suse.com/support/update/SUSE-SU-2026:2036/

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GitHub PoC

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