How serious is CVE-2025-71263?

This vulnerability has a CVSS score of 7.4 out of 10, classified as HIGH severity. No public exploit code has been identified yet.

Which products are affected by CVE-2025-71263?

Check the official CVE details for a complete list of affected products and versions.

How do I fix CVE-2025-71263?

To remediate CVE-2025-71263, check for security patches from the vendor. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2025-71263

High

|7.4

No Exploit

Plain English Summary

AI-powered analysis for quick understanding

This vulnerability allows a local user to gain root privileges on a system by exploiting a flaw in the su command that can be triggered by entering a long password. However, it's important to note that this issue is primarily relevant only in very rare and outdated lab environments, as UNIX Fourth Research Edition is not commonly used today.

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.

CVSS Vector Analysis

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

Confidentiality ImpactHigh

Integrity ImpactHigh

Availability ImpactHigh

ScopeUnchanged

Vector String

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Resources

Search for proof-of-concept code and exploit modules

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Official References

NIST NVD

Est. Bounty

$1,842($1K-$5K)

Vendor Response

Grade APatched in 2 days

Quick Information

Published

Mar 13, 2026

25 days ago

Last Modified

Mar 16, 2026

22 days ago