CVE-2021-27446 | Weintek EasyWeb cMT Code Injection

The Weintek cMT product line is vulnerable to code injection, which may allow an unauthenticated remote attacker to execute commands with root privileges on the operation system.

Published: 2022-05-16 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-27446 is rated High Risk (71.6/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.64%). EPSS rose +2.37% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-27446

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.28% 2.64% +2.37%
2 2025-11-21 0.45% 0.28% -0.17%
3 2025-11-18 — 0.45% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-27446

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 6.0 [email protected]
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2021-27446

Affected software / configurations for CVE-2021-27446

Vendor Product Version Raw CPE
weintek cmt-svr-100_firmware < 20210305 cpe:2.3:o:weintek:cmt-svr-100_firmware:*:*:*:*:*:*:*:*
weintek cmt-svr-102_firmware < 20210305 cpe:2.3:o:weintek:cmt-svr-102_firmware:*:*:*:*:*:*:*:*
weintek cmt-svr-200_firmware < 20210305 cpe:2.3:o:weintek:cmt-svr-200_firmware:*:*:*:*:*:*:*:*
weintek cmt-svr-202_firmware < 20210305 cpe:2.3:o:weintek:cmt-svr-202_firmware:*:*:*:*:*:*:*:*
weintek cmt-g01_firmware < 20210209 cpe:2.3:o:weintek:cmt-g01_firmware:*:*:*:*:*:*:*:*
weintek cmt-g02_firmware < 20210209 cpe:2.3:o:weintek:cmt-g02_firmware:*:*:*:*:*:*:*:*
weintek cmt-g03_firmware < 20210222 cpe:2.3:o:weintek:cmt-g03_firmware:*:*:*:*:*:*:*:*
weintek cmt-g04_firmware < 20210222 cpe:2.3:o:weintek:cmt-g04_firmware:*:*:*:*:*:*:*:*
weintek cmt3071_firmware < 20210218 cpe:2.3:o:weintek:cmt3071_firmware:*:*:*:*:*:*:*:*
weintek cmt3072_firmware < 20210218 cpe:2.3:o:weintek:cmt3072_firmware:*:*:*:*:*:*:*:*
weintek cmt3090_firmware < 20210218 cpe:2.3:o:weintek:cmt3090_firmware:*:*:*:*:*:*:*:*
weintek cmt3103_firmware < 20210218 cpe:2.3:o:weintek:cmt3103_firmware:*:*:*:*:*:*:*:*
weintek cmt3151_firmware < 20210218 cpe:2.3:o:weintek:cmt3151_firmware:*:*:*:*:*:*:*:*
weintek cmt-hdm_firmware < 20210204 cpe:2.3:o:weintek:cmt-hdm_firmware:*:*:*:*:*:*:*:*
weintek cmt-fhd_firmware < 20210208 cpe:2.3:o:weintek:cmt-fhd_firmware:*:*:*:*:*:*:*:*
weintek cmt-ctrl01_firmware < 20210302 cpe:2.3:o:weintek:cmt-ctrl01_firmware:*:*:*:*:*:*:*:*

References for CVE-2021-27446

cvelogic Threat Intelligence