CVE-2020-5722
SQLi in Grandstream Ucm6200 Firmware ≤ 1.0.19.20
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSummary
CVE-2020-5722 is a critical-severity SQL Injection (CWE-89) vulnerability in Grandstream Ucm6200 Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 0.3% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
The vulnerability is an unauthenticated remote SQL injection flaw, tracked as CVE-2020-5722 with CVSS 9.8 and CWE-89, present in the HTTP interface of the Grandstream UCM6200 series IP PBX appliances. It is triggered by specially crafted HTTP requests and affects versions prior to 1.0.19.20 for command execution impact and prior to 1.0.20.17 for HTML injection impact.
An unauthenticated remote attacker can supply malicious input over the network to exploit the SQL injection, resulting in the ability to execute arbitrary shell commands with root privileges on vulnerable firmware or to inject arbitrary HTML content into password-recovery emails.
Public exploit code and technical details have been published on PacketStorm and in Tenable research advisory TRA-2020-15, confirming that the issues can be triggered without authentication or user interaction; mitigation requires updating the affected UCM6200 devices to the fixed firmware releases noted in the vulnerability description.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2020-26881
Vulnerability Data
The HTTP interface of the Grandstream UCM6200 series is vulnerable to an unauthenticated remote SQL injection via crafted HTTP request. An attacker can use this vulnerability to execute shell commands as root on versions before 1.0.19.20 or inject HTML in…
more
password recovery emails in versions before 1.0.20.17.
- CWE(s)
- KEV Date Added
- 28 January 2022
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V6.2.5
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure SDLC practices directly target injection flaws during coding and review so largely prevent CWE-89 introduction, yet the single broad outcome leaves residual risk from incomplete neutralization techniques or missed edge cases.
Training raises developer awareness of SQLi risks and can reduce introduction likelihood (partial) but removes none of the actual coding flaw's risk by itself since technical neutralization is still required.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
The same secure-coding and static-analysis activities surface missing neutralization of SQL metacharacters before the system is accepted.
Early warnings and shared best-practice information help organizations apply the latest remediation techniques against SQL-injection vulnerabilities.
Threat-intelligence feeds that surface new SQL-injection campaigns enable rapid updates to query-construction defenses and detection signatures before exploitation occurs.
Secure-coding rules and security testing phases mandate the use of parameterized queries or equivalent escaping, preventing the construction of dynamic SQL statements from untrusted input.
Language-specific secure coding rules, peer review and SAST together prevent the construction of SQL statements from untrusted data without proper parameterization or escaping.