CVE-2026-17274Network attack vector

Authenticated security bypass via predictable server seeds

Published Sep 4, 2026 · Updated Sep 4, 2026

Use of insufficiently random values in the IBMi Debug Server 7.3 through 7.6 allows remote authenticated attackers to bypass security restrictions. The Debug Server generates predictable server seeds instead of values with sufficient unpredictability for the security decision. IBM has not disclosed the seed-generation locus, the restriction bypassed, or the exact data accessible or modifiable; exploitation requires authenticated network access.

CVSS severity5.4
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of insufficiently random values in the IBMi Debug Server 7.3 through 7.6 allows remote authenticated attackers to bypass security restrictions. The Debug Server generates predictable server seeds instead of values with sufficient unpredictability for the security decision. IBM has not disclosed the seed-generation locus, the restriction bypassed, or the exact data accessible or modifiable; exploitation requires authenticated network access.

The record

CVE
CVE-2026-17274
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
IBM
Product
IBM i
Classifications
CWE-330, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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

5.4IBMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-330Use of Insufficiently Random Values
T1210Exploitation of Remote Services

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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