Risk Letters

Exploited vulnerability

CVE-2022-41352

TLP:CLEAR

Synacor Zimbra Collaboration Suite (ZCS) Arbitrary File Upload Vulnerability

Synacor Zimbra Collaboration Suite (ZCS) allows an attacker to upload arbitrary files using cpio package to gain incorrect access to any other user accounts.

Facts

  • Vendor: Synacor
  • Product: Zimbra Collaboration Suite (ZCS)
  • CVSS: 9.8
  • EPSS (probability of exploitation within 30 days): 95.5 %
  • On CISA's Known Exploited Vulnerabilities list since: 20 October 2022
  • First known exploitation: 20 October 2022
  • Used in ransomware campaigns (per CISA): Yes
  • CISA's deadline for US federal agencies: 10 November 2022
  • Weakness: CWE-22
  • First seen by Risk Letters: 20 October 2022

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD