CVE-2021-42550

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

4.77% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 91.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

Moderate. Red Hat's rating for its own products, not a CVSS rating.

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

2021-12-16 00:00Z4 YR AGO

Last updated

2024-08-04 03:38Z2 YR AGO

Reserved

2021-10-15

Assigning CNA

NCSC.ch

Record state

PUBLISHED

Severity

Medium (CVSS 6.6)

CNA CVSS vector

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

Weaknesses

• CWE-502Deserialization of Untrusted DataBase

Data version

5.1

Document digest

7d5ad7447c96a783ad8e539493f5448ae62cc54bffa061aa35650d9d2ebce879

• logback.qos.chhttp://logback.qos.ch/news.html
• github.comhttps://github.com/cn-panda/logbackRceDemo
• jira.qos.chhttps://jira.qos.ch/browse/LOGBACK-1591
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20211229-0001/
• seclists.org20220721 Open-Xchange Security Advisory 2022-07-21http://seclists.org/fulldisclosure/2022/Jul/11mailing-list
• packetstormsecurity.comhttp://packetstormsecurity.com/files/167794/Open-Xchange-App-Suite-7.10.x-Cross-Site-Scripting-Command-Injection.html
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-371761.pdf