CVE-2020-5758

highpriority · track · 37EPSS 0.044 · 91 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

4.38% (91st) EPSS

CVSS 9 · high

Is it mine?

4 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

Grandstream UCM6200 series firmware version 1.0.20.23 and below is vulnerable to OS command injection via HTTP. An authenticated remote attacker can execute commands as the root user by sending a crafted HTTP GET to the UCM's "Old" HTTPS API.

cvss

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

9.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.09highAV:N/AC:L/Au:S/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8 · impact 10

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USprimary

affected products (4)

Products and version ranges known to be affected.

n/a Grandstream UCM6200 Series≤ Versions 1.0.20.23 and belowenisa_euvdEU
grandstream ucm6202 firmware≤ 1.0.20.23nvdUScpe:2.3:o:grandstream:ucm6202_firmware:*:*:*:*:*:*:*:*
grandstream ucm6204 firmware≤ 1.0.20.23nvdUScpe:2.3:o:grandstream:ucm6204_firmware:*:*:*:*:*:*:*:*
grandstream ucm6208 firmware≤ 1.0.20.23nvdUScpe: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 2020-07-17modified 2026-06-17

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references (7)

External citations — patches, advisories, analysis.

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