NVD / CVE Program· CNA trendmicro

CVE-2021-45441: A origin validation error vulnerability in Trend Micro Apex One (on-prem and SaaS) could allow a local attacker drop and manipulate a specia

Noroxi assessment

Priority: Monitor (action score 31/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.26% (FIRST EPSS).
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A origin validation error vulnerability in Trend Micro Apex One (on-prem and SaaS) could allow a local attacker drop and manipulate a specially crafted file to issue commands over a certain pipe and elevate to a higher level of privileges. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

HighCVSS 7.8 · v3.1—No exploit No fix recorded

Local privilege escalation

Published: Jan 10, 2022
Updated: Jun 17, 2026
EPSS: 0.2% · 18th percentile
CWE: CWE-346

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 31 / 40 · 7.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.2%

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
No fixed version yet

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
trendmicro	apex one	cpe:2.3:a:trendmicro:apex_one
trendmicro	worry-free business security	cpe:2.3:a:trendmicro:worry-free_business_security
trendmicro	worry-free business security services	cpe:2.3:a:trendmicro:worry-free_business_security_services
microsoft	windows	cpe:2.3:o:microsoft:windows

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

trendmicro apex one2019
trendmicro worry-free business security10.0
trendmicro worry-free business security servicesall versions

Versions reported by the vendor

Affected version ranges reported by the assigning authority (trendmicro). Independent of NVD's CPE analysis and usually ahead of it.

Trend Micro Trend Micro Apex One
- 2019, SaaSaffected

Same product

trendmicro: all records

Other highest-scoring records for the same primary product.

CVE-2025-54948A vulnerability in Trend Micro Apex One (on-premise) management console could allow a pre-authenticated remote attacker to upload malicious KEV
76This week
CVE-2020-8599Trend Micro Apex One (2019) and OfficeScan XG server contain a vulnerable EXE file that could allow a remote attacker to write arbitrary datKEV
73This week
CVE-2020-8467A migration tool component of Trend Micro Apex One (2019) and OfficeScan XG contains a vulnerability which could allow remote attackers to eKEV
68This week

Published before and after this one in the same product

← EarlierCVE-2021-45231Jan 10, 2022 · A link following privilege escalation vulnerability in Trend Micro Apex One (on-prem and SaaS) and Trend Micro Worry-Free Business Security
31Monitor
← EarlierCVE-2021-45440Jan 10, 2022 · A unnecessary privilege vulnerability in Trend Micro Apex One and Trend Micro Worry-Free Business Security 10.0 SP1 (on-prem versions only)
31Monitor
Later →CVE-2021-45442Jan 10, 2022 · A link following denial-of-service vulnerability in Trend Micro Worry-Free Business Security (on prem only) could allow a local attacker to
28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).