CVE-2021-35394 on CISA KEV

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 t

01What CISA says about this vulnerability

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.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• www.securityfocus.com — https://www.securityfocus.com/archive/1/534765
• www.realtek.com — https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en
• www.realtek.com — https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-202…
• www.iot-inspector.com — https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supp…

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

06Detection

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