CVE-1999-1539

NONECVSS 0.0Weaponized

0.0

Buffer overflow in FTP server in QPC Software's QVT/Term Plus versions 4.2d and 4.3 and QVT/Net 4.3 allows remote attackers to cause a denial of service, and possibly execute arbitrary commands, via a long (1) user name or (2) password.

CVSS v3: —
EG Score: —
EPSS: 95.5%
KEV: Not listed

Published

November 10, 1999

Last Modified

April 16, 2026

References (8)

cve@mitrehttp://marc.info/?l=bugtraq&m=94225924803704&w=2
cve@mitrehttp://marc.info/?l=ntbugtraq&m=94223972910670&w=2
cve@mitrehttp://www.securityfocus.com/bid/796
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/3491
af854a3a-2127-422b-91ae-364da2661108http://marc.info/?l=bugtraq&m=94225924803704&w=2
af854a3a-2127-422b-91ae-364da2661108http://marc.info/?l=ntbugtraq&m=94223972910670&w=2
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/796
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/3491

Data Freshness Timeline

(refreshed 13× in last 7d / 19× 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.

2026-05-29 13:40 UTCepss_batch
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Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-19619✓ verified
First seen Nov 10, 1999
QPC Software QVT Term 4.3/QVT/Net 4.3 Suite FTP Server - Denial of Service
Open source ↗

Frequently asked(4)

What is CVE-1999-1539?

CVE-1999-1539 is a none vulnerability published on November 10, 1999. Buffer overflow in FTP server in QPC Software's QVT/Term Plus versions 4.2d and 4.3 and QVT/Net 4.3 allows remote attackers to cause a denial of service, and possibly execute arbitrary commands, via a long (1) user name or (2) password.

When was CVE-1999-1539 disclosed?

CVE-1999-1539 was first published in the National Vulnerability Database on November 10, 1999, 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-1999-1539 actively exploited?

CVE-1999-1539 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 95.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-1999-1539?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-1539, 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-1999-1539

📅 Published

🔄 Last Modified

🔗 References (8)