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CVE-2020-28578

69
FAUCET Score

CVE-2020-28578 is a critical remote code execution vulnerability affecting Trend Micro InterScan Web Security Virtual Appliance 6.5 SP2. An unauthenticated, remote attacker can exploit this flaw by sending a specially crafted HTTP message, leading to arbitrary code execution with elevated privileges. With a CVSS score of 9.8, this vulnerability presents a significant risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While no public exploits, Metasploit modules, or Nuclei templates are currently available, and there is minimal community discussion or media coverage, its high EPSS score suggests a notable probability of exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
6.5CPE matchmatch criteria
cpe:2.3:a:trendmicro:interscan_web_security_virtual_appliance:6.5:sp2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
72.27%
Probability of exploitation in next 30 days
EPSS Percentile
99.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.7227 is in the 98th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (7)

esetvendor investigatingvia llm_extracted
hyperledgervendor investigatingvia llm_extracted
mariadbvendor investigatingvia llm_extracted
omronvendor investigatingvia llm_extracted
openrefinevendor investigatingvia llm_extracted
pnpmvendor investigatingvia llm_extracted
twiliovendor investigatingvia llm_extracted

Vendor Advisories (7)

twiliollm-twilio-f336d6cafc2359f3HIGH

Trend Micro InterScan Web Security Virtual Appliance Multiple Vulnerabilities

Nov 16, 2020
esetllm-eset-43ebe9b1a7cb5314HIGH

Trend Micro InterScan Web Security Virtual Appliance Multiple Vulnerabilities

Nov 16, 2020
hyperledgerllm-hyperledger-7a4ce89d55af345eHIGH

Trend Micro InterScan Web Security Virtual Appliance Multiple Vulnerabilities

Nov 16, 2020
pnpmllm-pnpm-8ca2ea2703e4283eHIGH

Trend Micro InterScan Web Security Virtual Appliance Multiple Vulnerabilities

Nov 16, 2020
omronllm-omron-c5e928494a2e6e7eHIGH

Trend Micro InterScan Web Security Virtual Appliance Multiple Vulnerabilities

Nov 16, 2020
openrefinellm-openrefine-b63f83645876f77aHIGH

Trend Micro InterScan Web Security Virtual Appliance Multiple Vulnerabilities

Nov 16, 2020
mariadbllm-mariadb-95f1128a69d045f8HIGH

Trend Micro InterScan Web Security Virtual Appliance Multiple Vulnerabilities

Nov 16, 2020

References

success.trendmicro.com / solution/000281954
Vendor Advisory
tenable.com / security/research/tra-2020-63
ExploitThird Party Advisory