Is CVE-2021-47787 in the CISA KEV catalog?

No. CVE-2021-47787 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-47787?

CVE-2021-47787 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-47787?

CVE-2021-47787 has an EPSS score of 0.23% (14th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2021-47787?

No published fix for CVE-2021-47787 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2021-47787

HIGH

7.8

CVSS v3

NVD

Description

TotalAV 5.15.69 contains an unquoted service path vulnerability in multiple system services running with LocalSystem privileges. Attackers can place malicious executables in specific unquoted path segments to potentially gain SYSTEM-level access by exploiting the service path configuration.

CWE-428

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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

0.23%probability of exploitation in 30 days

14thpercentile

Low risk: more likely to be exploited than 14% of all known CVEs.

References

Exploit1

exploit-db.com

Third-Party Advisory1

vulncheck.com

Product1

totalav.com

Related Vulnerabilities

Other CWE-428 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-38408	Critical	9.8	77%	-	Fix
CVE-2020-15261	High	8.0	11%	-	Fix
CVE-2018-10619	High	7.8	2.8%	-	Fix
CVE-2019-17658	Critical	9.8	2.2%	-	-
CVE-2015-4173	Medium	6.9	2.1%	-	Fix
CVE-2019-16647	High	7.2	2.0%	-	-

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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 2026-02-09.