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Vulnerability record · CVE-2018-19792 · published 3 December 2018

CVE-2018-19792: Litespeedtech openlitespeed memory buffer overflow vulnerability

Litespeedtech · Openlitespeed

The server in LiteSpeed OpenLiteSpeed before 1.5.0 RC6 allows local users to cause a denial of service (buffer overflow) or possibly have unspecified other impact by creating a symlink through which the openlitespeed program can be invoked with a long command name (involving ../ characters), which is mishandled in the LshttpdMain::getServerRootFromExecutablePath function.

6.7 CVSS 3.0 Medium EPSS 0.43% · top 65.4% CWE-119 · Memory buffer overflow
6.7CVSS 3.0 base score, v2 4.6
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The server in LiteSpeed OpenLiteSpeed before 1.5.0 RC6 allows local users to cause a denial of service (buffer overflow) or possibly have unspecified other impact by creating a symlink through which the openlitespeed program can be invoked with a long command name (involving ../ characters), which is mishandled in the LshttpdMain::getServerRootFromExecutablePath function.

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/litespeedtech/openlitespeed/issues/117 ExploitVendor Advisory
https://github.com/litespeedtech/openlitespeed/issues/117 ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-19792), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.