Cloudanix VulnDB

CVE-2025-71263

High · 7.4

CVSS

7.4

EPSS

0.2%

Published

Mar 13, 2026

CISA due date

—

The record

In UNIX Fourth Research Edition (v4), the su command is vulnerable to a buffer overflow due to the 'password' variable having a fixed size of 100 bytes. A local user can exploit this to gain root privileges. It is unlikely that UNIX v4 is running anywhere outside of a very small number of lab environments. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

Affected packages

Ecosystem Package Introduced Fixed

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