Unauthenticated sensitive-information disclosure via out-of-bounds read
Published Aug 13, 2026 · Updated Aug 13, 2026
An out-of-bounds read in NetServer on IBM operating system releases 7.3 through 7.6 allows remote attackers to obtain sensitive information. IBM has not disclosed the request field, buffer, or code path that reads beyond its intended bounds. No authentication or user interaction is required, and the documented consequence is limited to sensitive-information disclosure.
Summary
What happened
An out-of-bounds read in NetServer on IBM operating system releases 7.3 through 7.6 allows remote attackers to obtain sensitive information. IBM has not disclosed the request field, buffer, or code path that reads beyond its intended bounds. No authentication or user interaction is required, and the documented consequence is limited to sensitive-information disclosure.
The record
- CVE
- CVE-2026-16859
- Published
- Aug 13, 2026
- Updated
- Aug 13, 2026
- Vendor
- IBM
- Product
- IBM i
- Classifications
- CWE-125, T1210
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 13, 2026CVE publishedPublication date reported by the CVE source.
- Aug 13, 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.
- Affected versionversion=7.3
- Affected versionversion=7.4
- Affected versionversion=7.5
- Affected versionversion=7.6
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
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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