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CVE-2021-25249

24
FAUCET Score

CVE-2021-25249 is an out-of-bounds write vulnerability affecting Trend Micro Apex One (on-prem and SaaS), OfficeScan XG SP1, and Worry-Free Business Security (10.0 SP1 and Services). This flaw allows a local attacker with low-privileged code execution to escalate privileges on the compromised system. Rated 7.8 HIGH, the vulnerability requires local access and has a high impact on confidentiality, integrity, and availability. Currently, there is no public exploit code available, it is not listed in CISA's KEV catalog, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2019CPE matchmatch criteria
cpe:2.3:a:trendmicro:apex_one:2019:*:*:*:*:*:*:*
xgCPE matchmatch criteria
cpe:2.3:a:trendmicro:officescan:xg:sp1:*:*:*:*:*:*
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
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
34.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 75th percentile among its peer group of 17,070 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

No media coverage found for this CVE.

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

success.trendmicro.com / solution/000284202
PatchVendor Advisory
success.trendmicro.com / solution/000284205
PatchVendor Advisory
success.trendmicro.com / solution/000284206
PatchVendor Advisory
zerodayinitiative.com / advisories/ZDI-21-119
Third Party AdvisoryVDB Entry