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CVE-2026-16829 IBM CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-19T20:17:03.553Z and has not been modified since then. CVE-2026-16829 is a medium-severity vulnerability in IBM AIX 7.2, 7.3 and IBM PowerVM VIOS 4.1 that could allow a remote attacker to cause a denial of service due to a NULL pointer dereference. The vulnerability has a CVSS score of 5.3 and is classified as CWE-476. Affected systems may experience disruptions in service if exploited. System administrators should review system configurations and implement compensating controls. This vulnerability was reported by an external researcher and details are limited. Defenders should verify system configurations, review system logs for potential denial of service attempts, and monitor for updates from IBM.

Vendor
IBM
Product
AIX
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-19
Original CVE updated
2026-08-24
Advisory published
2026-08-19
Advisory updated
2026-08-24

Who should care

System administrators and security teams responsible for IBM AIX and PowerVM VIOS systems, as well as organizations relying on these systems for critical infrastructure, should be aware of this vulnerability. They should review system configurations, monitor system logs, and implement compensating controls to mitigate potential denial of service attempts. Additionally, security teams should prioritize patching and updating affected systems to prevent exploitation.

Technical summary

CVE-2026-16829 is a medium-severity vulnerability in IBM AIX 7.2, 7.3 and IBM PowerVM VIOS 4.1 that could allow a remote attacker to cause a denial of service due to a NULL pointer dereference. The vulnerability has a CVSS score of 5.3 and is classified as CWE-476. Affected systems may experience disruptions in service if exploited. System administrators should review system configurations and implement compensating controls.

Defensive priority

Medium-priority defensive actions recommended due to potential denial of service via NULL pointer dereference in IBM AIX and PowerVM VIOS.

Recommended defensive actions

  • Inventory and verify affected IBM AIX and PowerVM VIOS systems
  • Apply vendor patches or updates as available
  • Monitor system logs for potential denial of service attempts
  • Implement compensating controls for network access

Evidence notes

Evidence from official CVE Program record and NIST NVD detail page indicates potential denial of service via NULL pointer dereference in IBM AIX 7.2, 7.3 and IBM PowerVM VIOS 4.1. Limited details on affected scope and vendor remediation. Defenders should verify system configurations, review system logs for potential denial of service attempts, and monitor for updates from IBM.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-16829 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-16829

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-16829 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-16829

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.