Description
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to bypass security restrictions due to improper validation of a session token.
Published: 2026-08-12
Score: 6.8 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

Improper validation of session tokens in IBM i 7.3, 7.4, 7.5, and 7.6 allows a remote authenticated attacker to bypass security restrictions. This flaw is a CWE‑294 vulnerability.

Affected Systems

The affected product is IBM i, versions 7.3, 7.4, 7.5, and 7.6 SR1 Option 3. Patches are available per release: 7.6SJ10887 for 7.6, 7.5SJ10888 for 7.5, 7.4SJ10890 for 7.4, and 7.3SJ10891 for 7.3. These fixes address the token validation logic in Navigator for i.

Risk and Exploitability

The CVSS score is 6.8 indicating medium severity. No EPSS score is available and it is not listed in KEV, but the vulnerability requires remote authenticated access, implying an attacker must possess valid credentials. IBM recommends addressing the flaw immediately, and the correction is delivered via the provided PTFs. Until patched, systems remain vulnerable.

Generated by OpenCVE AI on August 13, 2026 at 00:36 UTC.

Remediation

Vendor Solution

IBM strongly recommends addressing the vulnerability now. IBM i Release5770-SS1 Option 3 PTF Number(s)PTF Download Link(s)7.6SJ10887 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10887 7.5SJ10888 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10888 7.4SJ10890 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10890 7.3SJ10891 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10891 IBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.

OpenCVE Recommended Actions

  • Download and apply the appropriate PTF (e.g., 7.6SJ10887 for IBM i 7.6) from IBM's support site to fix the session token validation flaw.
  • Apply the corresponding PTFs for other affected releases (7.5SJ10888, 7.4SJ10890, and 7.3SJ10891) to ensure all environments are protected.
  • If the current environment cannot be patched immediately, upgrade to a supported IBM i release that includes the fix as recommended by IBM.

Generated by OpenCVE AI on August 13, 2026 at 00:36 UTC.

Tracking

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Advisories

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History

Thu, 13 Aug 2026 16:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:ibm:i:*:*:*:*:*:*:*:*

Wed, 12 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 12 Aug 2026 17:30:00 +0000

Type Values Removed Values Added
Description IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to bypass security restrictions due to improper validation of a session token.
Title IBM i is Affected By Multiple Vulnerabilities in Navigator for i
First Time appeared Ibm
Ibm i
Weaknesses CWE-294
CPEs cpe:2.3:a:ibm:i:7.3.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm i
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N'}

Subscriptions

Ibm I
cve-icon MITRE

Status: PUBLISHED

Assigner: ibm

Published:

Updated: 2026-08-12T18:50:29.466Z

Reserved: 2026-07-24T23:10:36.106Z

Link: CVE-2026-17268

cve-icon Vulnrichment

Updated: 2026-08-12T18:50:21.844Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-12T18:17:26.437

Modified: 2026-08-13T16:29:35.190

Link: CVE-2026-17268

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-13T00:45:02Z

Weaknesses
  • CWE-294

    Authentication Bypass by Capture-replay