How severe is CVE-2020-5723?

CVE-2020-5723 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-2020-5723 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5723?

CVE-2020-5723 primarily affects Grandstream Ucm6202 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-5723?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-5723 published?

CVE-2020-5723 was published on 2020-03-30 and last updated on 2026-06-17.

CVE-2020-5723

CVE-2020-5723 is a critical-severity vulnerability in Grandstream Ucm6202 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-312.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-312
Affected product: Grandstream Ucm6202 Firmware
Published: 2020-03-30
Last modified: 2026-06-17

Description

The UCM6200 series 1.0.20.22 and below stores unencrypted user passwords in an SQLite database. This could allow an attacker to retrieve all passwords and possibly gain elevated privileges.

Frequently asked questions

What is CVE-2020-5723?: The UCM6200 series 1.0.20.22 and below stores unencrypted user passwords in an SQLite database. This could allow an attacker to retrieve all passwords and possibly gain elevated privileges.
How severe is CVE-2020-5723?: CVE-2020-5723 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-2020-5723 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5723?: CVE-2020-5723 primarily affects Grandstream Ucm6202 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-5723?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-5723 published?: CVE-2020-5723 was published on 2020-03-30 and last updated on 2026-06-17.

References

https://www.tenable.com/security/research/tra-2020-17

Affected products (3)

cpe:2.3:o:grandstream:ucm6202_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:ucm6204_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:ucm6208_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Grandstream Ucm6202 Firmware

CVE-2020-5759 — Critical (CVSS 9.8): Grandstream UCM6200 series firmware version 1.0.20.23 and below is vulnerable to OS command injection via SSH. An…
CVE-2020-5757 — Critical (CVSS 9.8): Grandstream UCM6200 series firmware version 1.0.20.23 and below is vulnerable to OS command injection via HTTP. An…
CVE-2020-5758 — High (CVSS 8.8): Grandstream UCM6200 series firmware version 1.0.20.23 and below is vulnerable to OS command injection via HTTP. An…
CVE-2020-5726 — High (CVSS 7.5): The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the CTI server on port 8888. A…
CVE-2020-5724 — High (CVSS 7.5): The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the HTTP server's websockify…
CVE-2020-5725 — Medium (CVSS 5.9): The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the HTTP server's websockify…

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