Is CVE-1999-0038 actively exploited?

A proof-of-concept exploit is publicly available for CVE-1999-0038, but active exploitation has not been confirmed.

Can CVE-1999-0038 be exploited remotely?

No. CVE-1999-0038 requires local access to exploit.

What is the CVSS score of CVE-1999-0038?

CVE-1999-0038 has a CVSS score of 8.4 (HIGH).

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HIGHPOC

CVE-1999-0038

NVD-CWE-OtherPublished: April 26, 1997· Updated: Jun 16, 2026

8.4

CVSS v3.1

Official Description

Buffer overflow in xlock program allows local users to execute commands as root.

NVD Source

Technical Analysis

CVE-1999-0038 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.4.

A proof-of-concept (PoC) exploit exists for CVE-1999-0038. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.