Synacor Zimbra Collaboration Suite (ZCS) Arbitrary File Upload Vulnerability (CVE-2022-41352)
Severity: critical · Patch status: patched · Since 2022-10-20 · CVE-2022-41352
Synacor Zimbra Collaboration Suite (ZCS) allows an attacker to upload arbitrary files using cpio package to gain incorrect access to any other user accounts. CISA added CVE-2022-41352 to its Known Exploited Vulnerabilities catalog on Oct 20, 2022, which means attackers are exploiting it in the wild. CISA reports known use in ransomware campaigns.
What to do
- Apply updates per vendor instructions.
- US federal agencies must remediate by Nov 10, 2022 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
