CVE-1999-1540

Name: CVE-1999-1540
Creator: NVD / NIST
Published: 1999-10-04T04:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.26%

Last modified Jun 16, 2026

CVE-1999-1540 is a vulnerability of currently unknown severity. shell-lock in Cactus Software Shell Lock uses weak encryption (trivial encoding) which allows attackers to easily decrypt and obtain the source code.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.

Description

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

Metrics

EPSS Probability

0.26%

16.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Cactus Software	Shell-Lock	All versions

References

Timeline

Published: Oct 4, 1999
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-1999-1540?

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

How severe is CVE-1999-1540?

Severity scoring for CVE-1999-1540 is pending analysis. The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.

How do I fix CVE-1999-1540?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-1999-1540?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST