Auth bypass in Lizardsystems Terminal Services Manager
CVE-2018-25259
Terminal Services Manager 3.1 contains a stack-based buffer overflow vulnerability in the computer names field that allows local attackers to execute arbitrary code by triggering structured exception handling. Attackers can craft a malicious input file with shellcode and jump instructions that overwrite the SEH handler pointer to execute calc.exe or other payloads when imported through the add computers wizard.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (7.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/46058 (Exploit, VDB Entry, exploit)
- lizardsystems.com (Product, product)
- www.vulncheck.com/advisories/terminal-services-manager-buffer-overflow-seh (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2018-25259?
- CVE-2018-25259 is a high-severity vulnerability in Lizardsystems Terminal Services Manager, classified under Missing Authentication for Critical Function. CVSS score: 8.4/10. Published 2026-04-22.
- How severe is CVE-2018-25259?
- High severity. CVSS v3 base score is 8.4 out of 10.