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CVE-2020-5723

38
FAUCET Score

CVE-2020-5723 is a critical vulnerability affecting Grandstream UCM6200 series IP PBX devices running firmware version 1.0.20.22 and below. It involves the storage of unencrypted user passwords in an SQLite database, allowing an unauthenticated attacker to remotely retrieve all stored credentials. With a CVSS score of 9.8 (Critical), this flaw presents a significant risk, as it can lead to complete compromise of the system and potentially elevated privileges. While not currently on the KEV catalog, a Metasploit module exists for credential dumping, indicating readily available exploit code, though community discussion and media coverage remain low.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.20.22CPE matchmatch criteria
cpe:2.3:o:grandstream:ucm6202_firmware:*:*:*:*:*:*:*:*
< 1.0.20.22CPE matchmatch criteria
cpe:2.3:o:grandstream:ucm6204_firmware:*:*:*:*:*:*:*:*
< 1.0.20.22CPE matchmatch criteria
cpe:2.3:o:grandstream:ucm6208_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.70%
Probability of exploitation in next 30 days
EPSS Percentile
92.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: Grandstream UCM62xx IP PBX WebSocket Blind SQL Injection Credential Dump · Mar 30, 2020
This CVE's current EPSS score of 0.0570 is in the 87th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (6)

boschvendor investigatingvia llm_extracted
maxkbvendor investigatingvia llm_extracted
nxpvendor investigatingvia llm_extracted
openfirevendor investigatingvia llm_extracted
openstackvendor investigatingvia llm_extracted
opnsensevendor investigatingvia llm_extracted

Vendor Advisories (6)

maxkbllm-maxkb-8c13906c9d04098bMEDIUM

Grandstream UCM62xx Multiple SQL Injections

Mar 30, 2020
openstackllm-openstack-2fa39bfa63e7df25MEDIUM

Grandstream UCM62xx Multiple SQL Injections

Mar 30, 2020
nxpllm-nxp-e53c8ca6cea50468MEDIUM

Grandstream UCM62xx Multiple SQL Injections

Mar 30, 2020
boschllm-bosch-c291386e9e3bd700MEDIUM

Grandstream UCM62xx Multiple SQL Injections

Mar 30, 2020
opnsensellm-opnsense-061d8e2765be0e6dMEDIUM

Grandstream UCM62xx Multiple SQL Injections

Mar 30, 2020
openfirellm-openfire-d9dc15d312cd4a17MEDIUM

Grandstream UCM62xx Multiple SQL Injections

Mar 30, 2020

References

tenable.com / security/research/tra-2020-17
ExploitThird Party Advisory