CVE-2018-25259 Terminal Services Manager 3.1 Buffer Overflow SEH
Local attackers can execute arbitrary code via a stack-based buffer overflow in the computer names field of Terminal Services Manager.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-25259?
CVE-2018-25259 is a high-severity memory corruption vulnerability in Lizardsystems Terminal Services Manager, published on 22 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-306
Which versions are affected by CVE-2018-25259?
It affects 1 product.
Products include Lizardsystems Terminal Services Manager.
How do I fix CVE-2018-25259?
No fix has been published for CVE-2018-25259 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2018-25259 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-25259 exists.
Other vulnerabilities in Lizardsystems Terminal Services Manager
Sources
Also known as GHSA-2m2r-hgfh-2mrp.