Unquoted Service Path Vulnerability in Softros LAN Messenger by Softros Systems
CVE-2021-47889

8.5HIGH

Key Information:

Vendor

Softros Systems

Status
Lan Messenger
Vendor
CVE Published:
23 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47889?

The unquoted service path vulnerability in Softros LAN Messenger version 9.6.4 affects the SoftrosSpellChecker service, allowing local attackers to exploit an improperly specified service path. By targeting the unquoted path located at 'C:\Program Files (x86)\Softros Systems\Softros Messenger\Spell Checker', attackers may inject malicious executables that could lead to privilege escalation and arbitrary code execution. Proper precautions and service path configurations are critical to mitigate this risk.

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Affected Version(s)

LAN Messenger 9.6.4

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-2021-47889 - Proof of Concept

References

https://www.exploit-db.com/exploits/49588
exploit
https://www.softros.com/
product
https://www.vulncheck.com/advisories/softros-lan-messenge...
third-party-advisory

CVSS V4

Score:
8.5
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

Victor Mondragón
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