CVE-2021-27198

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

13.62% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 96.1% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-02-26 22:53Z5 YR AGO

Last updated

2024-08-03 20:40Z2 YR AGO

Reserved

2021-02-12

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-434Unrestricted Upload of File with Dangerous TypeBase

Data version

5.1

Document digest

bd7042f9e0bd71fd688c90d0a36c325d8fa3dcb6d292064e07240c6496e6b4a3

• myconnectionserver.visualware.comhttps://myconnectionserver.visualware.com/download.htmlx_refsource_MISC
• myconnectionserver.visualware.comhttps://myconnectionserver.visualware.com/support/newrelease.htmlx_refsource_MISC
• seclists.org20210226 VisualWare MyConnection Server 11.x Remote Code Execution Vulnerabilityhttp://seclists.org/fulldisclosure/2021/Feb/81mailing-listx_refsource_FULLDISC
• packetstormsecurity.comhttp://packetstormsecurity.com/files/161571/VisualWare-MyConnection-Server-11.x-Remote-Code-Execution.htmlx_refsource_MISC
• www.securifera.comhttps://www.securifera.com/advisories/cve-2021-27198/x_refsource_MISC