Security readout for executives and security teams
Grandstream UCM6200 phone system appliances can be compromised through their web interface without a login. On older firmware, the issue can let an attacker run commands as root. Because CISA lists this CVE in KEV, treat exposed systems as urgent. Exposure is likely where Grandstream UCM6200 Series IP PBX web management interfaces are internet-facing or reachable from untrusted networks. Internal-only systems still matter if reachable by compromised users, VPN clients, or adjacent network segments. Prioritize remediation immediately for any exposed UCM6200 appliance. This is a critical, unauthenticated management-interface flaw with known exploitation and potential root-level impact on phone system infrastructure. Mitigation focus: Inventory Grandstream UCM6200 Series appliances and record firmware versions.; Upgrade affected systems to 1.0.20.17 or later, following vendor guidance.; Remove public access to the HTTP management interface..
Michael Williams reviewed this cited source version on .
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Open ATT&CK lookupCredential and access behavior lookup
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Open ATT&CK lookupDatabase behavior lookup
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Open ATT&CK lookupCVE-2020-5722 mapping review
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Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- Yes
- 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
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CISA KEV status
CVSS vector scores
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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
- https://www.tenable.com/security/research/tra-2020-15CVE reference · x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-5722CVE reference · government-resource
Products and packages named in the record
CWE details
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Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.