CVE-2026-19653: CWE-400 Uncontrolled Resource Consumption in IBM AIX
CVE-2026-19653 is a medium severity vulnerability affecting IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. It involves uncontrolled resource consumption due to improper handling of memory page table configurations, which could allow a local attacker to cause a denial of service. No public exploits are known, and no official patch or remediation has been confirmed yet.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-19653) in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 is classified under CWE-400 (Uncontrolled Resource Consumption). It arises from improper handling of memory page table configurations, enabling a local attacker with low privileges to cause a denial of service condition by exhausting system resources. The CVSS 3.1 base score is 6.5, reflecting a medium severity with local attack vector, low attack complexity, and no user interaction required. The vulnerability impacts system availability but does not affect confidentiality or integrity.
Potential Impact
A local attacker with low privileges can exploit this vulnerability to cause a denial of service by exhausting memory resources related to page table configurations. This results in system unavailability or degraded performance. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits are currently reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary workaround is documented, monitoring IBM's security advisories for updates is recommended. Until a patch is available, limit local access to trusted users to reduce risk.
CVE-2026-19653: CWE-400 Uncontrolled Resource Consumption in IBM AIX
Description
CVE-2026-19653 is a medium severity vulnerability affecting IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. It involves uncontrolled resource consumption due to improper handling of memory page table configurations, which could allow a local attacker to cause a denial of service. No public exploits are known, and no official patch or remediation has been confirmed yet.
CVSS v3.1
Score 6.5medium
Affected software
cpe:2.3:a:ibm:vios:4.1:*:*:*:*:*:*:*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 (CVE-2026-19653) in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 is classified under CWE-400 (Uncontrolled Resource Consumption). It arises from improper handling of memory page table configurations, enabling a local attacker with low privileges to cause a denial of service condition by exhausting system resources. The CVSS 3.1 base score is 6.5, reflecting a medium severity with local attack vector, low attack complexity, and no user interaction required. The vulnerability impacts system availability but does not affect confidentiality or integrity.
Potential Impact
A local attacker with low privileges can exploit this vulnerability to cause a denial of service by exhausting memory resources related to page table configurations. This results in system unavailability or degraded performance. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits are currently reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary workaround is documented, monitoring IBM's security advisories for updates is recommended. Until a patch is available, limit local access to trusted users to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-08-12T18:09:01.704Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a85f0f8acd9273b496dcae8
Added to database: 08/19/2026, 18:07:52 UTC
Last enriched: 08/19/2026, 18:24:59 UTC
Last updated: 08/19/2026, 22:16:19 UTC
Views: 6
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