CVE-1999-1540

NONECVSS 0.0

0.0

shell-lock in Cactus Software Shell Lock uses weak encryption (trivial encoding) which allows attackers to easily decrypt and obtain the source code.

CVSS v3: —
EG Score: —
EPSS: 21.8%
KEV: Not listed

Published

October 4, 1999

Last Modified

April 16, 2026

References (6)

cve@mitrehttp://marc.info/?l=bugtraq&m=93916168802365&w=2
cve@mitrehttp://www.atstake.com/research/advisories/1999/shell-lock.txt
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/3356
af854a3a-2127-422b-91ae-364da2661108http://marc.info/?l=bugtraq&m=93916168802365&w=2
af854a3a-2127-422b-91ae-364da2661108http://www.atstake.com/research/advisories/1999/shell-lock.txt
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/3356

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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Frequently asked(4)

What is CVE-1999-1540?

CVE-1999-1540 is a none vulnerability published on October 4, 1999. shell-lock in Cactus Software Shell Lock uses weak encryption (trivial encoding) which allows attackers to easily decrypt and obtain the source code.

When was CVE-1999-1540 disclosed?

CVE-1999-1540 was first published in the National Vulnerability Database on October 4, 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-1999-1540 actively exploited?

CVE-1999-1540 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 21.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-1999-1540?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-1540, 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-1999-1540

📅 Published

🔄 Last Modified

🔗 References (6)