Multi-Stage Backdoor in NetSarang Software Products
CVE-2025-34252

9.3CRITICAL

Key Information:

Vendor

Netsarang Computer, Inc.

Status
Xmanager Enterprise
Xmanager
Xshell
Xftp
Vendor
CVE Published:
7 October 2025

Badges

👾 Exploit Exists

What is CVE-2025-34252?

A malicious backdoor was embedded in multiple versions of NetSarang's software applications, specifically in the nssock2.dll library. This backdoor allows attackers to execute arbitrary code and exfiltrate sensitive data through a DNS-based communication method. It generates a domain to contact a command and control server, waits for a decryption key, and unfolds a series of actions leading to remote execution capabilities. Affected software versions have been updated to remediate this security issue. Users of NetSarang software should ensure they are using the latest, patched builds to avoid potential exploitation.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

Xftp 5.0 Build 1218

Xlpd 5.0 Build 1220

Xmanager 5.0 Build 1045

References

https://web.archive.org/web/20181022035109/https://www.ne...
vendor-advisorypatch
https://usa.kaspersky.com/about/press-releases/shadowpad-...
technical-description
https://securelist.com/shadowpad-in-corporate-networks/81...
technical-description

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Kaspersky Lab
JSON
.