CVE-2021-43430: Bigantsoft Bigant Office Messenger 5

High severity, CVSS 8.8. EPSS: 1.1% chance of exploitation in the next 30 days.

An Access Control vulnerability exists in BigAntSoft BigAnt office messenger 5.6 via im_webserver, which could let a malicious user upload PHP Trojan files.

Affected products

• Bigantsoft Bigant Office Messenger 5: version 5.6 only

Published 2022-04-07. Last modified 2026-06-17.