CVE-2021-47891

Unified Remote 3.9.0.2463 - Remote Code Execution

Published Jan 23, 2026 CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Description
Unified Remote 3.9.0.2463 contains a remote code execution vulnerability that allows attackers to send crafted network packets to execute arbitrary commands. Attackers can exploit the service by connecting to port 9512 and sending specially crafted packets to open a command prompt and download and execute malicious payloads.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Unifiedremote
Unifiedremote unified Remote
CPEs cpe:2.3:a:unifiedremote:unified_remote:3.9.0.2463:*:*:*:*:*:*:*
Vendors & Products Unifiedremote
Unifiedremote unified Remote
Type Values Removed Values Added
First Time appeared Unified Intents
Unified Intents unified Remote
Vendors & Products Unified Intents
Unified Intents unified Remote
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Unified Remote 3.9.0.2463 contains a remote code execution vulnerability that allows attackers to send crafted network packets to execute arbitrary commands. Attackers can exploit the service by connecting to port 9512 and sending specially crafted packets to open a command prompt and download and execute malicious payloads.
Title Unified Remote 3.9.0.2463 - Remote Code Execution
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Apr 7, 2026, 2:06 PM
Reserved
Jan 18, 2026, 12:35 PM
Status
Deferred
Published
Jan 23, 2026, 5:15 PM
Modified
Jun 17, 2026, 4:18 AM