Is CVE-2021-43771 in the CISA KEV catalog?

No. CVE-2021-43771 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-43771?

CVE-2021-43771 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-43771?

CVE-2021-43771 has an EPSS score of 0.32% (24th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-43771?

Upgrade antivirus to 11.0.2163 or later.

CVE & CISA-KEV Catalog

CVE-2021-43771

HIGH

7.8

CVSS v3

NVD

Description

Trend Micro Antivirus for Mac 2021 v11 (Consumer) is vulnerable to an improper access control privilege escalation vulnerability that could allow an attacker to establish a connection that could lead to full local privilege escalation within the application. Please note that an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

How to fix

Remediation Available

antivirusNVD

Affected:>= 11.0, < 11.0.2163Fixed in:11.0.2163CVE-2021-43771derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.32%probability of exploitation in 30 days

24thpercentile

Low risk: more likely to be exploited than 24% of all known CVEs.

References

Vendor Advisory1

helpcenter.trendmicro.com

Third-Party Advisory1

zerodayinitiative.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.