CVE-1999-0038

HIGHNVD 8.4Weaponized

8.4

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

CVSS v3: 8.4
EG Score: —
EPSS: 31.2%
KEV: Not listed

Published

April 26, 1997

Last Modified

April 16, 2026

References (2)

cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0038
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0038

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

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Publicly available exploits

(2 references)

Working exploit code is in the public domain (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-19173✓ verified
First seen Apr 26, 1997
BSD/OS 2.1 / DG/UX 7.0 / Debian 1.3 / HP-UX 10.34 / IBM AIX 4.2 / SGI IRIX 6.4 / Solaris 2.5.1 - '/usr/bin/X11/xlock' Local Privilege Escalation (2)
Open source ↗
Exploit-DBEDB-19172✓ verified
First seen Apr 26, 1997
BSD/OS 2.1 / DG/UX 7.0 / Debian 1.3 / HP-UX 10.34 / IBM AIX 4.2 / SGI IRIX 6.4 / Solaris 2.5.1 - 'xlock' Local Overflow / Local Privilege Escalation (1)
Open source ↗

Frequently asked(5)

What is CVE-1999-0038?

CVE-1999-0038 is a high vulnerability published on April 26, 1997. Buffer overflow in xlock program allows local users to execute commands as root.

When was CVE-1999-0038 disclosed?

CVE-1999-0038 was first published in the National Vulnerability Database on April 26, 1997, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-1999-0038 actively exploited?

CVE-1999-0038 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 31.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

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

CVE-1999-0038 has a CVSS v3 base score of 8.4 (NVD).

How do I remediate CVE-1999-0038?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-0038, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-1999-0038

📅 Published

🔄 Last Modified

🔗 References (2)