Softros LAN Messenger 9.6.4 - 'SoftrosSpellChecker' Unquoted Service Path
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?

Softros LAN Messenger 9.6.4 contains an unquoted service path vulnerability in the SoftrosSpellChecker service that allows local attackers to potentially execute arbitrary code. Attackers can exploit the unquoted path in 'C:\Program Files (x86)\Softros Systems\Softros Messenger\Spell Checker' to inject malicious executables and escalate privileges.

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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