CVE-2020-5726

mediumpriority · track · 42EPSS 0.043 · 91 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

4.33% (91st) EPSS

CVSS 5 · medium

Is it mine?

4 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the CTI server on port 8888. A remote unauthenticated attacker can invoke the challenge action with a crafted username and discover user passwords.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.1highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-89USprimary

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-48270Grandstream UCM6200 Series CTI Interface - 'user_password' SQL InjectionPoC · exploit_db

affected products (4)

Products and version ranges known to be affected.

n/a Grandstream UCM6200 Series≤ 1.0.20.20 and belowenisa_euvdEU
grandstream ucm6202 firmware< 1.0.20.22nvdUScpe:2.3:o:grandstream:ucm6202_firmware:*:*:*:*:*:*:*:*
grandstream ucm6204 firmware< 1.0.20.22nvdUScpe:2.3:o:grandstream:ucm6204_firmware:*:*:*:*:*:*:*:*
grandstream ucm6208 firmware< 1.0.20.22nvdUScpe:2.3:o:grandstream:ucm6208_firmware:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2020-03-30modified 2026-06-17

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references (9)

External citations — patches, advisories, analysis.

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