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Vulnerabilities

Vulnerability · CVE-2026-16831

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to uncontrolled resource consumption.

Published Aug 19, 2026 · catalog updated Oct 26, 2026 · IBM AIX 7.2, and

Last checked Oct 26, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-16831. EPSS is 0.55%. Act only if a listed version of IBM AIX 7.2, and is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (IBM AIX 7.2, and).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.55%
Remediation
Version ranges on file
Affected products
cpe ibm/aix · cpe ibm/vios

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to uncontrolled resource consumption.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe ibm/aix>= 7.2.5, <= 7.2.5.212
  • cpe ibm/aix>= 7.3.2, <= 7.3.2.5
  • cpe ibm/aix>= 7.3.3, <= 7.3.3.2
  • cpe ibm/aix>= 7.3.4, <= 7.3.4.1
  • cpe ibm/vios< 4.1.0.50
  • cpe ibm/vios< 4.1.1.30
  • cpe ibm/vios< 4.1.2.20

How to fix CVE-2026-16831

  • Upgrade

    CVE-2026-16831 lists a fix boundary at 7.2.5.212. Compare the installed build with that boundary before you change production.

  • Version check

    Affected <= 7.2.5.212

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-16831. EPSS is 0.55%. Act only if a listed version of IBM AIX 7.2, and is installed.

Which versions are affected?

Compare what you have installed with >= 7.2.5, <= 7.2.5.212, >= 7.3.2, <= 7.3.2.5, >= 7.3.3, <= 7.3.3.2, >= 7.3.4, <= 7.3.4.1, < 4.1.0.50, < 4.1.1.30. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-400: Uncontrolled Resource Consumption. EPSS 0.55%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 19, 2026 · NIST NVD

    Detected

    IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to uncontrolled resource consumption.

  2. Oct 26, 2026 · NIST NVD

    Updated

    IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to uncontrolled resource consumption.

Sources

  • CVE.orgVulnerability recordCVE-2026-16831

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2026-16831

    IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to uncontrolled resource consumption.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 26, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgOct 26, 2026
  • NIST NVDOct 26, 2026