CVE-2021-27404

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

0.87% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 58.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2021-02-19 03:53Z5 YR AGO

Last updated

2024-08-03 20:48Z2 YR AGO

Reserved

2021-02-19

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-601URL Redirection to Untrusted Site ('Open Redirect')Base

Data version

5.1

Document digest

c32855f0c6902b3e8c0a1bb34eb514526dba102537c8ef60aa9c89c087146714

• github.comhttps://github.com/bokanrb/HostHeaderInjection-Askeyx_refsource_MISC