CVE-2026-18150Network attack vector

Authenticated sensitive-information disclosure via race condition

Published Aug 12, 2026 · Updated Aug 12, 2026

Information disclosure in Navigator on IBM operating-system releases 7.3 through 7.6 allows remote authenticated users to obtain sensitive information. IBM identifies improper synchronization of a shared resource but does not disclose the resource, competing operations, or request sequence. Valid product credentials and network access to Navigator are required, and the reported consequence is limited to sensitive-information exposure.

CVSS severity4.3
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Navigator on IBM operating-system releases 7.3 through 7.6 allows remote authenticated users to obtain sensitive information. IBM identifies improper synchronization of a shared resource but does not disclose the resource, competing operations, or request sequence. Valid product credentials and network access to Navigator are required, and the reported consequence is limited to sensitive-information exposure.

The record

CVE
CVE-2026-18150
Published
Aug 12, 2026
Updated
Aug 12, 2026
Vendor
IBM
Product
IBM i
Classifications
CWE-362
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 2026Record 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=7.3
  2. Affected versionversion=7.4
  3. Affected versionversion=7.5
  4. Affected versionversion=7.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM iversion=7.3; version=7.4; version=7.5; version=7.6

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
4.3IBM CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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