VulnerabilityAnalyzed
CVE-2021-35394
Realtek Jungle SDK Remote Code Execution Vulnerability
KEVCRITICAL 9.8EPSS 99.9%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 24 December 2021). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 99.86% probability · 100th percentile
- CISA KEV
- Listed 10 December 2021 · due 24 December 2021
- Weakness
- CWE-78
- Affected
- realtek/rtl819x jungle software development kit
- Source
- cve@mitre.org
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2021-35394
References
- https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chainBroken Link, Exploit, Third Party Advisory
- https://www.realtek.com/en/cu-1-en/cu-1-taiwan-enBroken Link, Patch, Vendor Advisory
- https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdfPatch, Vendor Advisory
- https://www.securityfocus.com/archive/1/534765Broken Link, Third Party Advisory, VDB Entry
- https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chainBroken Link, Exploit, Third Party Advisory
- https://www.realtek.com/en/cu-1-en/cu-1-taiwan-enBroken Link, Patch, Vendor Advisory
- https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdfPatch, Vendor Advisory
- https://www.securityfocus.com/archive/1/534765Broken Link, Third Party Advisory, VDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-35394US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.