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CVE-2021-28648

24
FAUCET Score

CVE-2021-28648 is an improper access control vulnerability affecting Trend Micro Antivirus for Mac 2020 v10.5 and 2021 v11 (Consumer). This flaw allows a low-privileged attacker to establish a connection, leading to full local privilege escalation within the application. Rated 7.8 HIGH, it requires local access and low privileges but has high impacts on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 10.5, < 10.5.2088CPE matchmatch criteria
cpe:2.3:a:trendmicro:antivirus:*:*:*:*:*:macos:*:*
>= 11.0, < 11.0.2062CPE matchmatch criteria
cpe:2.3:a:trendmicro:antivirus:*:*:*:*:*:macos:*:*

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
0.53%
Probability of exploitation in next 30 days
EPSS Percentile
41.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0053 is in the 81st 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

helpcenter.trendmicro.com / en-us/article/TMKA-10293
PatchVendor Advisory
zerodayinitiative.com / advisories/ZDI-21-420
Third Party AdvisoryVDB Entry