{"cve":"CVE-2021-44564","nvd":{"published":"2022-01-06T12:15:08.190","modified":"2026-06-17T04:12:33.880","status":"Modified","description":"A security vulnerability originally reported in the SYNC2101 product, and applicable to specific sub-families of SYNC devices, allows an attacker to download the configuration file used in the device and apply a modified configuration file back to the device. The attack requires network access to the SYNC device and knowledge of its IP address. The attack exploits the unsecured communication channel used between the administration tool Easyconnect and the SYNC device (in the affected family of SYNC products).","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1},"cwes":[],"references":["https://kalkitech.com/wp-content/uploads/CYB_33631_Advisory.pdf","https://www.kalkitech.com/cybersecurity/","https://kalkitech.com/wp-content/uploads/CYB_33631_Advisory.pdf","https://www.kalkitech.com/cybersecurity/"],"products":["kalkitech:sync2000-m1_firmware","kalkitech:sync2000-m2_firmware","kalkitech:sync2000-m4_firmware","kalkitech:sync2101-m1_firmware","kalkitech:sync2101-m2_firmware","kalkitech:sync2101-m6_firmware","kalkitech:sync2101-m7_firmware","kalkitech:sync2101-m8_firmware","kalkitech:sync2111-m2_firmware","kalkitech:sync2111-m3_firmware","kalkitech:sync221-m1_firmware","kalkitech:sync241-m1_firmware","kalkitech:sync241-m2_firmware","kalkitech:sync241-m4_firmware","kalkitech:sync261-m1_firmware","kalkitech:sync3000-m12_firmware","kalkitech:sync3000-m1_firmware","kalkitech:sync3000-m2_firmware","kalkitech:sync3000-m3_firmware","kalkitech:sync3000-m4_firmware"],"source":"nvd","synced_at":"2026-10-19T21:26:33.761856376+00:00"},"epss":{"cve":"CVE-2021-44564","score":0.00947,"percentile":0.61151,"date":"2026-10-31"},"kev":null,"osv":[],"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."]}