Stack-Based Buffer Overflow in Terminal Services Manager by LizardSystems
CVE-2018-25259

8.6HIGH

Key Information:

Vendor

Lizardsystems

Status
Terminal Services Manager
Vendor
CVE Published:
22 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2018-25259?

Terminal Services Manager 3.1 has a stack-based buffer overflow vulnerability in the computer names field, which can be exploited by local attackers. By crafting a specially formatted input file containing shellcode and jump instructions, attackers can overwrite the structured exception handler (SEH) handler pointer. This can result in the execution of arbitrary code, such as launching calc.exe or other unauthorized payloads, particularly when using the add computers wizard within the application.

Affected Version(s)

Terminal Services Manager 3.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2018-25259 - Proof of Concept

References

https://www.exploit-db.com/exploits/46058
exploit
https://lizardsystems.com
product
https://www.vulncheck.com/advisories/terminal-services-ma...
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

bzyo
.