https://seclists.org/oss-sec/2026/q1/20: Buffer overflow in /bin/su from UNIX v4
Published Jan 5, 2026
·Updated
Affected Software
1 affected component
Bell Labs Research Unix Version 4=1973
Frequently Asked Questions
1
What is the severity of CVE-2026-XXXX?
CVE-2026-XXXX is classified as a critical vulnerability due to its potential to lead to remote code execution.
2
How do I fix CVE-2026-XXXX?
To fix CVE-2026-XXXX, it is recommended to apply patches to the /bin/su component or upgrade your system to a more secure version if available.
3
What systems are affected by CVE-2026-XXXX?
CVE-2026-XXXX affects the Bell Labs Research Unix Version 4 running in PDP-11 simulators.
4
Is CVE-2026-XXXX actively being exploited?
There is currently no public evidence indicating that CVE-2026-XXXX is being actively exploited in the wild.
5
What are the potential impacts of CVE-2026-XXXX?
The potential impacts of CVE-2026-XXXX include unauthorized access and privilege escalation on systems running the vulnerable software.