What’s Vulnerable › Vulnerabilities

CVE-2018-25259: Terminal Services Manager 3.1 Buffer Overflow SEH

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-22 · updated 2026-06-17
• Weakness: CWE-306

Description

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.

Affected products

• Lizardsystems Terminal Services Manager: through 3.1

References

• https://lizardsystems.com
• https://www.exploit-db.com/exploits/46058
• https://www.vulncheck.com/advisories/terminal-services-manager-buffer-overflow-seh

Get alerted when CVE-2018-25259 or the next vulnerability affects your stack