CISA KEV · Known exploitedHigh

CVE-2019-18187

Trend Micro OfficeScan

Trend Micro OfficeScan versions 11.0 and XG (12.0) could be exploited by an attacker utilizing a directory traversal vulnerability to extract files from an arbitrary zip file to a specific folder on the OfficeScan server, which could potentially lead to remote code execution (RCE). The remote process execution is bound to a web service account, which depending on the web platform used may have restricted permissions. An attempted attack requires user authentication.

CVSS: 7.5
EPSS: 25.1%
CISA KEV: Listed
Published: 2019.10.29

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability25.1%

Technical severityCVSS 7.5

Vulnerability overview

Affected product and versions

Product: Trend Micro OfficeScan
Affected versions: Version 11.0, XG (12.0), 11.0, xg
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply updates per vendor instructions.

Due date: 2022.05.03

1
Identify
Confirm that Trend Micro OfficeScan and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE: CWE-22
KEV added: 2021.11.03
Ransomware use: 미확인