AEGLIX vulnerability intelligence
CVE-2021-35394
CRITICAL · CVSS 9.8 · Analyzed
Published: 2021-08-16 · Updated: 2026-06-17 · Source: NVD
Vulnerability overview
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.
Severity and scoring
- CVSS score
- 9.8 · CRITICAL
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-78, NVD-CWE-Other
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Realtek · Jungle Software Development Kit (SDK)
- Added to catalog
- 2021-12-10
- Required action
- Apply updates per vendor instructions.
- CISA remediation due date
- 2021-12-24
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:realtek:rtl819x_jungle_software_development_kit:*:*:*:*:*:*:*:*
From (inclusive): 2.0
Through (inclusive): 3.4.14b
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain
Broken Link · Exploit · Third Party Advisory
- https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en
Broken Link · Patch · Vendor Advisory
- https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf
Patch · Vendor Advisory
- https://www.securityfocus.com/archive/1/534765
Broken Link · Third Party Advisory · VDB Entry
- https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain
Broken Link · Exploit · Third Party Advisory
- https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en
Broken Link · Patch · Vendor Advisory
- https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf
Patch · Vendor Advisory
- https://www.securityfocus.com/archive/1/534765
Broken Link · Third Party Advisory · VDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-35394
US Government Resource