CVE-2021-28023

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

1.35% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 69.6% 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

2021-11-08 14:28Z4 YR AGO

Last updated

2024-08-03 21:33Z2 YR AGO

Reserved

2021-03-05

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

4615d8d498d00a916a9c98f5a6cc86abc0bf9336fd62b32fb22061f91a089afa

• www.servicetonic.comhttps://www.servicetonic.com/x_refsource_MISC
• www.srlabs.dehttps://www.srlabs.de/bites/chaining-three-zero-day-exploits-in-itsm-software-servicetonic-for-remote-code-executionx_refsource_MISC