How severe is CVE-2020-5722?

CVE-2020-5722 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-5722 being actively exploited?

Yes. CVE-2020-5722 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-01-28, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2020-5722?

CVE-2020-5722 affects Grandstream Ucm6200 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-5722?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2020-5722 have an EU (EUVD) identifier?

Yes. CVE-2020-5722 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-26881. It is also flagged as exploited in the EUVD (since 2022-01-28).

When was CVE-2020-5722 published?

CVE-2020-5722 was published on 2020-03-23 and last updated on 2026-06-17.

CVE-2020-5722

CVE-2020-5722 is a critical-severity vulnerability in Grandstream Ucm6200 Firmware with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-01-28). The underlying weakness is classified as CWE-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 84% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-01-28)
EU (EUVD) id: EUVD-2020-26881
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-01-28)
Weakness: CWE-89
Affected product: Grandstream Ucm6200 Firmware
Published: 2020-03-23
Last modified: 2026-06-17

Description

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 password recovery emails in versions before 1.0.20.17.

Frequently asked questions

What is CVE-2020-5722?: 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 password recovery emails in versions before 1.0.20.17.
How severe is CVE-2020-5722?: CVE-2020-5722 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-5722 being actively exploited?: Yes. CVE-2020-5722 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-01-28, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2020-5722?: CVE-2020-5722 affects Grandstream Ucm6200 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-5722?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2020-5722 have an EU (EUVD) identifier?: Yes. CVE-2020-5722 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-26881. It is also flagged as exploited in the EUVD (since 2022-01-28).
When was CVE-2020-5722 published?: CVE-2020-5722 was published on 2020-03-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:grandstream:ucm6200_firmware:*:*:*:*:*:*:*:*

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