NVD / CVE Program· CNA ibm

CVE-2026-18249: IBM i Is Affected By Multiple Vulnerabilities in IBM Java SDK and IBM Java Runtime

Noroxi assessment

Priority: Monitor (action score 39/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.38% (FIRST EPSS).
Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to gain elevated privileges due to improper validation of pointers read from Java-controlled addresses.

CriticalCVSS 9.9 · v3.1—No exploit No fix recorded

Published: Aug 13, 2026
Updated: Aug 19, 2026
EPSS: 0.3% · 32th percentile
CWE: CWE-269

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 39 / 40 · 9.9 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.3%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 9.9
CNA · ibm: 8.4; 1.5 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
ibm	i	cpe:2.3:o:ibm:i

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

ibm i7.3
ibm i7.4
ibm i7.5
ibm i7.6

Versions reported by the vendor

Affected version ranges reported by the assigning authority (ibm). Independent of NVD's CPE analysis and usually ahead of it.

IBM i
- 7.6, 7.5, 7.4, 7.3affected

Same product

ibm: all records

Other highest-scoring records for the same primary product.

CVE-2026-18193IBM i Is Affected By Multiple Vulnerabilities in IBM Java SDK and IBM Java Runtime
40Plan
CVE-2026-96119IBM i is Affected By An Improper Control of Code Generation Vulnerability in HTTP Server Administration GUI
39Monitor
CVE-2026-18221IBM i is Affected By Improper Authorization and Authentication Vulnerabilities in DDM / DRDA [, ]
39Monitor

Published before and after this one in the same product

← EarlierCVE-2026-18086Aug 13, 2026 · IBM i is Affected By Multiple Vulnerabilities in Java Secure Sockets Extension
21Monitor
← EarlierCVE-2026-18101Aug 13, 2026 · IBM i is Affected By Multiple Vulnerabilities in WebSphere Application Server Liberty
35Monitor
Later →CVE-2026-18509Aug 13, 2026 · IBM i is Affected By A Prvilege Escalation Vulnerability []
28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-181930 days apartIBM i Is Affected By Multiple Vulnerabilities in IBM Java SDK and IBM Java Runtime
40Plan
CVE-2026-172761 days apartIBM i is Affected By Multiple Vulnerabilities in Navigator for i
39Monitor
CVE-2026-167220 days apartIBM i is Affected By An Unauthorized Privileges Vulnerability in SQL []
35Monitor
CVE-2026-181010 days apartIBM i is Affected By Multiple Vulnerabilities in WebSphere Application Server Liberty
35Monitor
CVE-2026-170821 days apartIBM i is Affected By Multiple Vulnerabilities in the Debug Server
35Monitor
CVE-2026-187131 days apartIBM i is Affected By Multiple Vulnerabilities in Navigator for i
35Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

IBMHackerOne · disclosure only (VDP)

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: low · the service can be disrupted

Impact can extend beyond the vulnerable component (scope changes).

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

Weakness class (CWE)

CWE-269 · Improper Privilege Management

CVSS vector

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

nvd-primary

Root cause

To simplify setup, a service account is granted broad, cluster-wide permissions. The principle of least privilege is skipped during installation.

The bug in code

The whole CWE-269 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

yaml

1kind: ClusterRole
2rules:
3  - apiGroups: ["*"]
4    resources: ["*"]
5    verbs: ["*"]

Fixed

yaml

1kind: Role
2metadata:
3  namespace: lodos-system
4rules:
5  - apiGroups: ["apps"]
6    resources: ["deployments"]
7    verbs: ["get", "list", "update"]

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

Abuse Elevation Control MechanismT1548

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

www.ibm.com/support/pages/node/7283283

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records