CVE-2026-17171: CWE-59 Improper Link Resolution Before File Access ('Link Following') in IBM AIX
CVE-2026-17171 is a high-severity vulnerability affecting IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. It involves improper resolution of symbolic links before file access, which could allow a local attacker to overwrite arbitrary files. This vulnerability is categorized under CWE-59 (Improper Link Resolution Before File Access). No official patch or remediation details are currently provided by the vendor. The vulnerability requires local privileges and does not involve user interaction for exploitation.
AI Analysis
Technical Summary
This vulnerability in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 arises from improper handling of symbolic links before file access, classified as CWE-59. A local attacker with low complexity can exploit this flaw to overwrite arbitrary files, potentially leading to full confidentiality, integrity, and availability compromise. The CVSS v3.1 base score is 7.8, 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 allows a local attacker to overwrite arbitrary files on affected systems, which can lead to significant compromise of system confidentiality, integrity, and availability. This could enable privilege escalation or disruption of system operations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local access to trusted users only and monitor for suspicious activity related to file modifications involving symbolic links.
CVE-2026-17171: CWE-59 Improper Link Resolution Before File Access ('Link Following') in IBM AIX
Description
CVE-2026-17171 is a high-severity vulnerability affecting IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. It involves improper resolution of symbolic links before file access, which could allow a local attacker to overwrite arbitrary files. This vulnerability is categorized under CWE-59 (Improper Link Resolution Before File Access). No official patch or remediation details are currently provided by the vendor. The vulnerability requires local privileges and does not involve user interaction for exploitation.
CVSS v3.1
Score 7.8high
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 in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 arises from improper handling of symbolic links before file access, classified as CWE-59. A local attacker with low complexity can exploit this flaw to overwrite arbitrary files, potentially leading to full confidentiality, integrity, and availability compromise. The CVSS v3.1 base score is 7.8, 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 allows a local attacker to overwrite arbitrary files on affected systems, which can lead to significant compromise of system confidentiality, integrity, and availability. This could enable privilege escalation or disruption of system operations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local access to trusted users only and monitor for suspicious activity related to file modifications involving symbolic links.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T18:11:28.252Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a877ac5acd9273b493025be
Added to database: 08/20/2026, 22:08:05 UTC
Last enriched: 08/20/2026, 22:23:31 UTC
Last updated: 08/20/2026, 23:19:47 UTC
Views: 3
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