SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2020-28578

A vulnerability in Trend Micro InterScan Web Security Virtual Appliance 6.5 SP2 could allow an unauthenticated, remote attacker to send a specially crafted HTTP message and achieve remote code execution with elevated privileges.

CRITICAL 9.8EPSS 73.0%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 73.0%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

A vulnerability in Trend Micro InterScan Web Security Virtual Appliance 6.5 SP2 could allow an unauthenticated, remote attacker to send a specially crafted HTTP message and achieve remote code execution with elevated privileges.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
73.05% probability · 99th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-787
Affected
trendmicro/interscan web security virtual appliance
Source
security@trendmicro.com
EPSS trend
0%38%75%3 November 2026: 73.05%3 November 20263 November 2026

EPSS 73.0% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

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