CVE-2026-18071

Local privilege escalation for low-privileged users

Published Aug 13, 2026 · Updated Aug 13, 2026

Improper privilege management in IBMi HTTP Server 7.3, 7.4, 7.5, and 7.6 allows local users to gain elevated privileges. IBM has not disclosed the affected function or incorrect privilege-management operation within licensed program 5770-DG1. Exploitation requires low-privileged local access; IBM does not identify the resulting authority level.

CVSS severity7.8
High
EPSS probability0.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper privilege management in IBMi HTTP Server 7.3, 7.4, 7.5, and 7.6 allows local users to gain elevated privileges. IBM has not disclosed the affected function or incorrect privilege-management operation within licensed program 5770-DG1. Exploitation requires low-privileged local access; IBM does not identify the resulting authority level.

The record

CVE
CVE-2026-18071
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
IBM
Product
IBM i
Classifications
CWE-269, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. 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.

  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 vectorlocal
Required privilegesauthenticated

What is affected?

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

Published CVSS scores

7.8IBMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1068Exploitation for Privilege Escalation

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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