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CVE-2021-35394

Published: Aug 16, 2021Updated: Nov 7, 2025 Sources: CVE List NVD BDUNVD-CWE-Other
9.8CRITICAL
NVD MITRE
EPSS Score
99.9%
Top 0.0%
CISA KEV
Active Exploitation
Since Dec 10, 2021
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Nuclei

Description

Realtek Jungle SDK version v2.x up to v3.4.14B provides a diagnostic tool called 'MP Daemon' that is usually compiled as 'UDPServer' binary. The binary is affected by multiple memory corruption vulnerabilities and an arbitrary command injection vulnerability that can be exploited by remote unauthenticated attackers.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

NVD-CWE-OtherCWE-78

Affected Products

Realtek Semiconductor Corp.
commercial·TWaka realtek, realtek “luna” sdk, rtl8195a firmware, rtsper.sys, rtl819x jungle sdk, realtek sdk, rtl819x jungle software development kit
Realtek SDKEmbedded
Hardware Firmware / network-adapter
Realtek “Luna” SDKEmbedded
Hardware Firmware / network-adapter
rtl819x jungle software development kitEmbedded
Hardware Firmware / network-adapter
and 1 more affected products View all →

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Dec 10, 2021
Remediation due:Dec 24, 2021

Required action: Apply updates per vendor instructions.

Official Patch Available
Is your org exposed to CVE-2021-35394?We'll check your whole external perimeter for exposure — free. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Execution
View detailed technique mapping

References

https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf
realtek.com
https://nvd.nist.gov/vuln/detail/CVE-2021-35394
nvd.nist.gov
https://www.anti-malware.ru/news/2021-08-16-111332/36688
anti-malware.ru
and 6 more references View all →

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