{"cve":"CVE-2021-42550","nvd":{"published":"2021-12-16T19:15:08.297","modified":"2026-06-17T04:09:48.663","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","score":6.6},"cwes":["CWE-502"],"references":["http://logback.qos.ch/news.html","http://packetstormsecurity.com/files/167794/Open-Xchange-App-Suite-7.10.x-Cross-Site-Scripting-Command-Injection.html","http://seclists.org/fulldisclosure/2022/Jul/11","https://cert-portal.siemens.com/productcert/pdf/ssa-371761.pdf","https://github.com/cn-panda/logbackRceDemo"],"products":["netapp:cloud_manager","netapp:service_level_manager","netapp:snap_creator_framework","qos:logback","redhat:satellite","siemens:sinec_nms"],"source":"nvd","synced_at":"2026-10-19T21:25:41.256909649+00:00"},"epss":{"cve":"CVE-2021-42550","score":0.0477,"percentile":0.91911,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-668q-qrv7-99fm","url":"https://osv.dev/vulnerability/GHSA-668q-qrv7-99fm","summary":"Deserialization of Untrusted Data in logback","modified":"2024-02-16T08:18:41.537541Z","packages":[{"ecosystem":"Maven","name":"ch.qos.logback:logback-core","purl":"pkg:maven/ch.qos.logback/logback-core","ranges":["<1.2.9"],"fixed":["1.2.9"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}