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Vulnerability record · CVE-2026-39929 · published 28 May 2026

CVE-2026-39929: Out-of-bounds read vulnerability

Lakeside SysTrack Agent versions prior to 11.2.1.28, 11.3.0.38, 11.4.0.24, 11.5.0.15 contain an out-of-bounds read vulnerability in the Command ID 30 UDP packet handler that allows remote attackers to crash the application by sending a specially crafted UDP packet. Attackers can send a malformed packet with an invalid memory address at offset 0x4 in the payload to trigger an access violation and cause a denial of service.

8.7 CVSS 4.0 High EPSS 1.9% · top 20.7% CWE-125 · Out-of-bounds readCWE-754 · CWE-754 Awaiting Analysis
8.7CVSS 4.0 base score
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
21 Jul 2026Last modified by NVD

Description

Lakeside SysTrack Agent versions prior to 11.2.1.28, 11.3.0.38, 11.4.0.24, 11.5.0.15 contain an out-of-bounds read vulnerability in the Command ID 30 UDP packet handler that allows remote attackers to crash the application by sending a specially crafted UDP packet. Attackers can send a malformed packet with an invalid memory address at offset 0x4 in the payload to trigger an access violation and cause a denial of service.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://documentation.lakesidesoftware.com/docs/112128-hotfix-agent-release-notes
https://documentation.lakesidesoftware.com/docs/1130xxx-hotfix-agent-release-notes
https://documentation.lakesidesoftware.com/docs/1140xxx-hotfix-agent-release-notes
https://documentation.lakesidesoftware.com/docs/1150xxx-hotfix-agent-release-notes
https://www.vulncheck.com/advisories/lakeside-systrack-agent-lsiagent-exe-out-of-bounds-read-via-udp

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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-2026-39929), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.