Security readout for executives and security teams
Plain-English summary
Unified Remote 3.9.0.2463 has a critical remote code execution issue. An unauthenticated attacker who can reach the service could run commands on the host. This matters most where Unified Remote is exposed beyond trusted local networks. Public exploit information exists, but the provided sources do not show confirmed active exploitation.
Executive priority
Treat as urgent for any exposed or widely reachable deployment. The issue enables full host compromise without credentials. Prioritize discovery, exposure reduction, and vendor-guided updating, especially on workstations or servers that can reach sensitive systems.
Technical view
The CVE describes unauthenticated network-based command execution in Unified Remote 3.9.0.2463, with CVSS 9.8 and CWE-306. The service is described as reachable on port 9512, and crafted packets can trigger arbitrary command execution. ExploitDB and VulnCheck list public exploit/advisory material. No vendor fix details are included in the provided sources.
Likely exposure
Systems running Unified Remote 3.9.0.2463 are at risk if the service is reachable by untrusted users or networks. Internet-exposed instances would be especially concerning. Environments using it only on tightly controlled local networks still need review because no authentication is required per the CVE description.
Exploitation context
The vulnerability is remotely reachable, low complexity, unauthenticated, and requires no user interaction. Public exploit material is referenced by ExploitDB. The CVE is not listed as KEV in the provided bundle, and no cited source confirms active exploitation in the wild.
Researcher notes
Evidence is strong for the vulnerability description and public exploit availability, but limited on vendor remediation. Avoid assuming affected versions beyond 3.9.0.2463. The future publication timestamp in the source bundle is unusual; validate against the CVE record during operational tracking.
Mitigation direction
- Identify any Unified Remote 3.9.0.2463 installations.
- Check Unified Remote vendor guidance and download page for updated versions.
- Remove internet exposure for the Unified Remote service.
- Restrict access to trusted management networks only.
- Disable or uninstall Unified Remote where not business-critical.
- Monitor affected hosts for suspicious process execution or downloads.
Validation and detection
- Inventory endpoints for Unified Remote and confirm installed version.
- Review firewall rules for exposure of the Unified Remote service.
- Check whether untrusted networks can reach the service.
- Confirm remediation by verifying upgraded, disabled, or access-restricted status.
- Review logs and endpoint telemetry for unexpected command execution.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-306: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-47891 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-49587CVE reference · exploit
- Unified Remote Official HomepageCVE reference · product
- Unified Remote Download PageCVE reference · product
- VulnCheck Advisory: Unified Remote 3.9.0.2463 - Remote Code ExecutionCVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Missing Authentication for Critical Function
Missing Authentication for Critical Function represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.