CVE-2020-24556

highpriority · track · 31EPSS 0.008 · 56 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.78% (56th) EPSS

CVSS 7.2 · high

Is it mine?

12 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

A vulnerability in Trend Micro Apex One, OfficeScan XG SP1, Worry-Free Business Security 10 SP1 and Worry-Free Business Security Services on Microsoft Windows may allow an attacker to create a hard link to any file on the system, which then could be manipulated to gain a privilege escalation and code execution. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. Please note that version 1909 (OS Build 18363.719) of Microsoft Windows 10 mitigates hard links, but previous versions are affected.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.07.2highAV:L/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 3.9 · impact 10

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.8highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-59USprimaryCWE-269US

affected products (12)

Products and version ranges known to be affected.

Trend Micro Trend Micro Apex One≤ 2009 (on premise), SaaSenisa_euvdEU
Trend Micro Trend Micro OfficeScan≤ XG SP1enisa_euvdEU
Trend Micro Trend Micro Worry-Free Business Security≤ 10 SP1, Services (SaaS)enisa_euvdEU
Trend Micro Apex One≤ SaaSfstec_bduRU
Trend Micro Apex One≤ On Premise (2019)fstec_bduRU
Trend Micro Trend Micro OfficeScan≤ XG SP1fstec_bduRU
Trend Micro Worry-Free Business Security≤ Services (WFBSS)fstec_bduRU
Trend Micro Worry-Free Business Security≤ 10 SP1fstec_bduRU
trendmicro apex one= 2019nvdUScpe:2.3:a:trendmicro:apex_one:*:*:*:*:*:*:*:*
trendmicro apex one= saasnvdUScpe:2.3:a:trendmicro:apex_one:*:*:*:*:*:*:*:*
trendmicro worry-free business security= 10.0nvdUScpe:2.3:a:trendmicro:worry-free_business_security:*:*:*:*:*:*:*:*
trendmicro worry-free business security servicesall versionsnvdUScpe:2.3:a:trendmicro:worry-free_business_security_services:*:*:*:*:*:*:*:*

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2020-09-01modified 2026-06-17

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+2367 more

references (15)

External citations — patches, advisories, analysis.

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