Lakeside SysTrack Agent LsiAgent.exe Out-of-Bounds Read via UDP
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Lakeside Software | SysTrack Agent | before 11.2.1.28; 11.3.0.xxx to before 11.3.0.38; 11.4.0.xxx to before 11.4.0.24; 11.5.0.xxx to before 11.5.0.15 | 11.2.1.28, 11.3.0.38, 11.4.0.24, 11.5.0.15 | Patch available | CNA |
- SysTrack Agent VendorLakeside Software Affected before 11.2.1.28; 11.3.0.xxx to before 11.3.0.38; 11.4.0.xxx to before 11.4.0.24; 11.5.0.xxx to before 11.5.0.15 Fixed in 11.2.1.28, 11.3.0.38, 11.4.0.24, 11.5.0.15 Patch available CNA
Remediation
- Fix · CNA SysTrack Agent (Lakeside Software, LLC.) Fixed in 11.2.1.28, 11.3.0.38, 11.4.0.24, 11.5.0.15
Timeline
- 2026-10-02 Threatist record created from CVE-2026-39929
- 2026-10-03 Alias added: GHSA-96w5-xvg7-p24r
References
Patch 4
- 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
More Lakeside Software vulnerabilities
- TI-2023-05597 Privilege Escalation to SYSTEM in Lakeside Software Installer CVSS 3.1HIGH 7.8
- TI-2026-27299 Race condition in Lakeside Software SysTrack Agent CVSS 3.1HIGH 7.4
- TI-2025-05647 LsiAgent.exe, a component of SysTrack from Lakeside Software, attempts to load several… CVSS 3.1MEDIUM 4.4
Sources
- CVE-2026-39929 · CVE Program
- CVE-2026-39929 · NVD
- FIRST EPSS
- GHSA-96w5-xvg7-p24r · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences