No exploitation reported

CVE-2021-25251

No exploitation reported by the sources we read.

Published2021-02-10
WeaknessCWE-94

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The Trend Micro Security 2020 and 2021 families of consumer products are vulnerable to a code injection vulnerability which could allow an attacker to disable the program's password protection and disable protection. An attacker must already have administrator privileges on the machine to exploit this vulnerability.

Timeline

dates in UTC

2021-02-1022:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-25251?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-25251?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Trendmicro antivirus\+ security 2020version to verify

Branch	Affected	Fixed in	Source
16.0	= 16.0	no fix published	NVD

Trendmicro antivirus\+ security 2021version to verify

Branch	Affected	Fixed in	Source
17.0	= 17.0	no fix published	NVD

Trendmicro internet security 2020version to verify

Branch	Affected	Fixed in	Source
16.0	= 16.0	no fix published	NVD

5 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

helpcenter.trendmicro.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.2read 2026-10-23
NVDCVSS 2.06.5read 2026-10-23
NVDweakness (CWE)CWE-94read 2026-10-23
FIRST EPSSEPSS score2.6 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published: 2021-02-10
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-25251?

Is CVE-2021-25251 actively exploited?

Active exploitation of CVE-2021-25251 has not been confirmed. Its EPSS score was 2.6% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-25251?

CVE-2021-25251 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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