CVE-2021-25251

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.

Published: 2021-02-10 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-25251 is rated Moderate Risk (59.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.49%). EPSS rose +1.63% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-25251

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.86% 2.49% +1.63%
2 2025-11-21 0.97% 0.86% -0.11%
3 2025-11-18 — 0.97% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-25251

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.2 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.2 5.9 [email protected]
6.5 2.0 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 6.4 [email protected]

Weakness enumeration for CVE-2021-25251

Affected software / configurations for CVE-2021-25251

Vendor Product Version Raw CPE
trendmicro antivirus\+_security_2020 16.0 cpe:2.3:a:trendmicro:antivirus\+_security_2020:16.0:*:*:*:*:*:*:*
trendmicro antivirus\+_security_2021 17.0 cpe:2.3:a:trendmicro:antivirus\+_security_2021:17.0:*:*:*:*:*:*:*
trendmicro internet_security_2020 16.0 cpe:2.3:a:trendmicro:internet_security_2020:16.0:*:*:*:*:*:*:*
trendmicro internet_security_2021 17.0 cpe:2.3:a:trendmicro:internet_security_2021:17.0:*:*:*:*:*:*:*
trendmicro maximum_security_2020 16.0 cpe:2.3:a:trendmicro:maximum_security_2020:16.0:*:*:*:*:*:*:*
trendmicro maximum_security_2021 17.0 cpe:2.3:a:trendmicro:maximum_security_2021:17.0:*:*:*:*:*:*:*
trendmicro premium_security_2020 16.0 cpe:2.3:a:trendmicro:premium_security_2020:16.0:*:*:*:*:*:*:*
trendmicro premium_security_2021 17.0 cpe:2.3:a:trendmicro:premium_security_2021:17.0:*:*:*:*:*:*:*

References for CVE-2021-25251

cvelogic Threat Intelligence