Is CVE-2021-43037 in the CISA KEV catalog?

No. CVE-2021-43037 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-43037?

CVE-2021-43037 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-43037?

CVE-2021-43037 has an EPSS score of 0.50% (39th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-43037?

Upgrade unitrends backup to 10.5.5 or later.

CVE & CISA-KEV Catalog

CVE-2021-43037

HIGH

7.8

CVSS v3

NVD

Description

An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. The Unitrends Windows agent was vulnerable to DLL injection and binary planting due to insecure default permissions. This allowed privilege escalation from an unprivileged user to SYSTEM.

CWE-427

How to fix

Remediation Available

unitrends backupNVD

Affected:>= 10.0, < 10.5.5Fixed in:10.5.5CVE-2021-43037derived 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 RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.50%probability of exploitation in 30 days

39thpercentile

Low risk: more likely to be exploited than 39% of all known CVEs.

References

Exploit2

Vendor Advisory1

helpdesk.kaseya.com

Related Vulnerabilities

Other CWE-427 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-27955	Critical	9.8	83%	-	-
CVE-2017-6517	Critical	9.8	46%	-	-
CVE-2020-3153	Medium	6.5	28%	KEV + Ransom	Fix
CVE-2024-48990	High	7.8	20%	-	Fix
CVE-2019-9491	High	7.8	13%	-	-
CVE-2020-3433	High	7.8	10%	KEV + Ransom	Fix

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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.