Detections
Analytics

CVE-2021-42550

medium

Description

In logback version 1.2.7 and prior versions, an attacker with the required privileges to edit configurations files could craft a malicious configuration allowing to execute arbitrary code loaded from LDAP servers.

References

https://security.netapp.com/advisory/ntap-20211229-0001/

https://cert-portal.siemens.com/productcert/pdf/ssa-371761.pdf

http://seclists.org/fulldisclosure/2022/Jul/11

https://github.com/heyjerrybecker/seevie-pri

https://github.com/Sansyuh06/CVE-Guard

https://github.com/Sansyuh06/CVE-Triage-Env

https://github.com/Live-Hack-CVE/CVE-2021-42550

https://github.com/advisories/GHSA-668q-qrv7-99fm

https://github.com/HynekPetrak/log4shell-finder

https://jira.qos.ch/browse/LOGBACK-1591

https://github.com/cn-panda/logbackRceDemo

http://packetstormsecurity.com/files/167794/Open-Xchange-App-Suite-7.10.x-Cross-Site-Scripting-Command-Injection.html

http://logback.qos.ch/news.html

Details

Source: Mitre, NVD

Published: 2021-12-16

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:M/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 6.6

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

Severity: Medium

EPSS

EPSS: 0.01989