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CVE-2025-71263

7.4 · HIGH
Published Mar 13, 2026 opengroup CWE-120

Overview

CVE-2025-71263 is a high-severity vulnerability affecting opengroup unix. It was published on March 13, 2026 and has a CVSS 3.1 base score of 7.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical Description

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.

Remediation

Check the references section for vendor advisories and patches from opengroup. Update unix to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor Product Versions Status

References

Ref discuss.systems/@ricci/115747843169814700 Ref sigma-star.at/blog/2025/12/unix-v4-buffer-overflow/ Ref www.spinellis.gr/blog/20251223/ Ref www.tuhs.org/pipermail/tuhs/2026-January/032991.html Ref www.openwall.com/lists/oss-security/2026/03/20/6 Ref www.openwall.com/lists/oss-security/2026/03/21/4

Frequently Asked Questions

What is CVE-2025-71263?

CVE-2025-71263 is a high-severity vulnerability affecting opengroup unix. It was published on March 13, 2026 and has a CVSS 3.1 base score of 7.4 (HIGH).

How severe is CVE-2025-71263?

This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-71263?

Check the references section for vendor advisories and patches from opengroup. Update unix to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-71263?

CyberStrike's AI-powered security agents can automatically detect CVE-2025-71263 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

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HackBrowser

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