SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-3609

A vulnerability in the Trend Micro InterScan Messaging Security Virtual Appliance 9.0 and 9.1 management portal could allow an unauthenticated user to access sensitive information in a particular log file that could be used to bypass authentication on…

HIGH 8.1EPSS 21.4%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 21.4%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

A vulnerability in the Trend Micro InterScan Messaging Security Virtual Appliance 9.0 and 9.1 management portal could allow an unauthenticated user to access sensitive information in a particular log file that could be used to bypass authentication on vulnerable installations.

CVSS 3.0
8.1 HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
21.45% probability · 98th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-522, CWE-532
Affected
trendmicro/interscan messaging security virtual appliance
Source
security@trendmicro.com
EPSS trend
0%13%25%21 September 2026: 6.92%22 September 2026: 21.45%27 October 2026: 21.45%21 September 202627 October 2026

EPSS moved from 6.9% on 21 September 2026 to 21.4% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.