CVE-2026-16841: CWE-787 Out-of-bounds Write in IBM AIX
CVE-2026-16841 is a high-severity vulnerability in IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. It involves a stack buffer overflow that could allow a remote attacker to execute arbitrary code without user interaction or privileges. The vulnerability is classified as CWE-787 (Out-of-bounds Write).
AI Analysis
Technical Summary
This vulnerability affects IBM AIX 7.2 and 7.3 and IBM PowerVM VIOS 4.1. It is caused by a stack buffer overflow condition that could be exploited remotely to execute arbitrary code. The CVSS 3.1 base score is 8.8, indicating high impact with attack vector as adjacent network, low attack complexity, no privileges required, no user interaction, and high confidentiality, integrity, and availability impacts. No official patch or remediation information is provided in the available data.
Potential Impact
Successful exploitation could lead to remote code execution with high impact on confidentiality, integrity, and availability of the affected systems. This could allow an attacker to fully compromise the system remotely without requiring privileges or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary mitigation is provided, monitoring IBM's security advisories for updates is recommended. Until a patch is available, consider limiting network exposure of affected systems and applying any recommended workarounds from IBM if published.
CVE-2026-16841: CWE-787 Out-of-bounds Write in IBM AIX
Description
CVE-2026-16841 is a high-severity vulnerability in IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. It involves a stack buffer overflow that could allow a remote attacker to execute arbitrary code without user interaction or privileges. The vulnerability is classified as CWE-787 (Out-of-bounds Write).
CVSS v3.1
Score 8.8high
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 affects IBM AIX 7.2 and 7.3 and IBM PowerVM VIOS 4.1. It is caused by a stack buffer overflow condition that could be exploited remotely to execute arbitrary code. The CVSS 3.1 base score is 8.8, indicating high impact with attack vector as adjacent network, low attack complexity, no privileges required, no user interaction, and high confidentiality, integrity, and availability impacts. No official patch or remediation information is provided in the available data.
Potential Impact
Successful exploitation could lead to remote code execution with high impact on confidentiality, integrity, and availability of the affected systems. This could allow an attacker to fully compromise the system remotely without requiring privileges or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary mitigation is provided, monitoring IBM's security advisories for updates is recommended. Until a patch is available, consider limiting network exposure of affected systems and applying any recommended workarounds from IBM if published.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T03:03:02.484Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a86098facd9273b498b4bfb
Added to database: 08/19/2026, 19:52:47 UTC
Last enriched: 08/19/2026, 20:09:50 UTC
Last updated: 08/19/2026, 21:32:10 UTC
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.