CVE-2020-5725Public exploitNetwork attack vector

Password disclosure via login username SQL injection

Published Mar 30, 2020 · Updated Aug 4, 2024

SQL injection in the websockify login action in Grandstream Networks UCM6200 Series before 1.0.20.22 allows remote attackers to read passwords. The endpoint embeds the unauthenticated username value in a query against the users table, enabling time-based recovery of user_password values. No account or user interaction is required, but the attacker must reach the appliance's HTTPS web interface; the demonstrated impact is password disclosure.

CVSS severity5.9
Medium
EPSS probability1.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in the websockify login action in Grandstream Networks UCM6200 Series before 1.0.20.22 allows remote attackers to read passwords. The endpoint embeds the unauthenticated username value in a query against the users table, enabling time-based recovery of user_password values. No account or user interaction is required, but the attacker must reach the appliance's HTTPS web interface; the demonstrated impact is password disclosure.

The record

CVE
CVE-2020-5725
Published
Mar 30, 2020
Updated
Aug 4, 2024
Vendor
Grandstream Networks
Product
UCM6200 Series
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 30, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.20.20 and below

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Grandstream Networks · UCM6200 Seriesversion=1.0.20.20 and below

Published CVSS scores

5.0TenableAV:N/AC:L/Au:N/C:P/I:N/A:N
4.3NVDAV:N/AC:M/Au:N/C:P/I:N/A:N
5.9NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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