CVE-2026-16834: CWE-190 Integer Overflow or Wraparound in IBM AIX
CVE-2026-16834 is a critical integer underflow vulnerability affecting IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. This flaw could allow a remote attacker to cause a denial of service. The vulnerability is characterized by an integer underflow condition, classified under CWE-190. No official patch or remediation guidance is currently available.
AI Analysis
Technical Summary
This vulnerability involves an integer underflow (CWE-190) in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. A remote attacker could exploit this flaw to cause a denial of service condition. The CVSS v3.1 base score is 9.8, indicating critical severity with network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability. The vulnerability is published and assigned CVE-2026-16834, but no official remediation level or patch information is currently provided.
Potential Impact
The vulnerability allows a remote attacker to cause a denial of service on affected IBM AIX and PowerVM VIOS systems by exploiting an integer underflow condition. The impact includes potential complete loss of availability and high impact on confidentiality and integrity as indicated by the CVSS score.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation is currently documented. Users should monitor IBM security advisories for updates and apply patches once available.
CVE-2026-16834: CWE-190 Integer Overflow or Wraparound in IBM AIX
Description
CVE-2026-16834 is a critical integer underflow vulnerability affecting IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. This flaw could allow a remote attacker to cause a denial of service. The vulnerability is characterized by an integer underflow condition, classified under CWE-190. No official patch or remediation guidance is currently available.
CVSS v3.1
Score 9.8critical
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 involves an integer underflow (CWE-190) in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. A remote attacker could exploit this flaw to cause a denial of service condition. The CVSS v3.1 base score is 9.8, indicating critical severity with network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability. The vulnerability is published and assigned CVE-2026-16834, but no official remediation level or patch information is currently provided.
Potential Impact
The vulnerability allows a remote attacker to cause a denial of service on affected IBM AIX and PowerVM VIOS systems by exploiting an integer underflow condition. The impact includes potential complete loss of availability and high impact on confidentiality and integrity as indicated by the CVSS score.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation is currently documented. Users should monitor IBM security advisories for updates and apply patches once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T02:44:56.021Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a86098facd9273b498b4bef
Added to database: 08/19/2026, 19:52:47 UTC
Last enriched: 08/19/2026, 20:24:00 UTC
Last updated: 08/19/2026, 21:32:20 UTC
Views: 3
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