CVE-2026-16922: CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition in IBM AIX
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to execute arbitrary code due to a time-of-check to time-of-use (TOCTOU) race condition.
AI Analysis
Technical Summary
This vulnerability is a TOCTOU race condition (CWE-367) in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. It allows a local attacker with low privileges to exploit the timing window between checking a condition and using a resource, potentially leading to arbitrary code execution. The CVSS 3.1 base score is 7.0, reflecting high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is currently available, and no known exploits are reported in the wild.
Potential Impact
Successful exploitation could result in arbitrary code execution by a local attacker with low privileges, potentially compromising system confidentiality, integrity, and availability. The attack complexity is high, and user interaction is not required. This could lead to significant security breaches on affected systems if exploited.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, limit local access to trusted users only and monitor for suspicious activity related to this vulnerability.
CVE-2026-16922: CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition in IBM AIX
Description
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to execute arbitrary code due to a time-of-check to time-of-use (TOCTOU) race condition.
CVSS v3.1
Score 7.0high
Affected software
cpe:2.3:a:ibm:aix:7.2:*:*:*:*:*:*:*cpe:2.3:a:ibm:aix:7.2.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:aix:7.3:*:*:*:*:*:*:*cpe:2.3:a:ibm:aix:7.3.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:powervm_vios:4.1:*:*:*:*:*:*:*cpe:2.3:a:ibm:powervm_vios:4.1.0:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a TOCTOU race condition (CWE-367) in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. It allows a local attacker with low privileges to exploit the timing window between checking a condition and using a resource, potentially leading to arbitrary code execution. The CVSS 3.1 base score is 7.0, reflecting high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is currently available, and no known exploits are reported in the wild.
Potential Impact
Successful exploitation could result in arbitrary code execution by a local attacker with low privileges, potentially compromising system confidentiality, integrity, and availability. The attack complexity is high, and user interaction is not required. This could lead to significant security breaches on affected systems if exploited.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, limit local access to trusted users only and monitor for suspicious activity related to this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T07:05:03.530Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a871151acd9273b49bdeede
Added to database: 08/20/2026, 14:38:09 UTC
Last enriched: 08/20/2026, 14:52:59 UTC
Last updated: 08/20/2026, 21:27:22 UTC
Views: 8
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