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CVE-2020-24557

64
FAUCET Score

CVE-2020-24557 is a privilege escalation vulnerability affecting Trend Micro Apex One and Worry-Free Business Security 10.0 SP1 on Microsoft Windows, allowing an attacker to temporarily disable security and elevate privileges by manipulating product folders and abusing a Windows function. This vulnerability requires an attacker to already have low-privileged code execution on the target system. Rated 7.8 HIGH (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), it poses a significant risk due to its potential for full compromise (Confidentiality, Integrity, Availability). The vulnerability is actively exploited in the wild, as confirmed by its presence in the KEV catalog and media coverage, despite no public exploit code being available on platforms like Metasploit or ExploitDB.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:trendmicro:apex_one:-:*:*:*:saas:*:*:*
2019CPE matchmatch criteria
cpe:2.3:a:trendmicro:apex_one:2019:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:a:trendmicro:worry-free_business_security:10.0:sp1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.64%
Probability of exploitation in next 30 days
EPSS Percentile
84.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · Nov 3, 2021
This CVE's current EPSS score of 0.0264 is in the 97th percentile among its peer group of 17,061 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

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

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
success.trendmicro.com / solution/000263632
Vendor Advisory
success.trendmicro.com / solution/000267260
Vendor Advisory
zerodayinitiative.com / advisories/ZDI-20-1094
Third Party AdvisoryVDB Entry