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VulnerabilityPublished Updated

CVE-2026-17491: IBM i · Improper Privilege Management

Source CVE Database V5

0

Not known to be exploited · CVSS 5.4 Medium.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score
5.4Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
IBMAffected
  • 7.3 – 7.6
4 affected builds
Fixed in–

CPE configurations (4)

  • cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*

AI-suggested

Until an official fix is available, monitor for vendor updates and apply them promptly once released.

Description

CVE-2026-17491 is a medium severity vulnerability in IBM i versions 7.3, 7.4, 7.5, and 7.6. It involves improper privilege management where a remote authenticated attacker could bypass security restrictions due to incorrect enforcement of the ChrootDirectory configuration directive. The vulnerability has a CVSS score of 5.4, indicating a moderate impact on confidentiality and integrity without affecting availability.

References

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