CVE-2021-44520

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

5.71% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 92.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/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

2022-04-12 23:21Z4 YR AGO

Last updated

2024-08-04 04:25Z2 YR AGO

Reserved

2021-12-01

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')Class

Data version

5.1

Document digest

d8211e732a334aca6e6c05ce5f8710216be786f970be0fe023da07daa153a2c3

• docs.citrix.comhttps://docs.citrix.com/en-us/xenmobile/server/document-history.htmlx_refsource_MISC
• gist.github.comhttps://gist.github.com/tree-chtsec/766f81e22ae383987d75eedb3b23b709x_refsource_MISC
• support.citrix.comhttps://support.citrix.com/article/CTX370551x_refsource_MISC
• www.chtsecurity.comhttps://www.chtsecurity.com/news/09be10ae-b50e-46c9-8ce7-2e995fd988fex_refsource_MISC