TWCERT warns of critical OS command injection in Hgiga iSherlock (CVE-2026-6349)
Taiwan’s TWCERT/CC published a critical vulnerability notice for an OS command injection flaw in Hgiga iSherlock appliances/software, including MailSherlock, SpamSherlock, and AuditSherlock. The issue (CVE-2026-6349, CVSS 9.8) could allow arbitrary OS command execution on the server under the conditions described in the advisory. Hgiga provides fixed package versions for both the 4.5 and 5.5 branches. Read more