Is CVE-2021-43036 in the CISA KEV catalog?

No. CVE-2021-43036 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-43036?

CVE-2021-43036 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2021-43036?

CVE-2021-43036 has an EPSS score of 1.86% (77th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-43036?

Upgrade unitrends backup to 10.5.5 or later.

CVE & CISA-KEV Catalog

CVE-2021-43036

CRITICALEPSS 77th pctl

9.8

CVSS v3

NVD

Description

An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. The password for the PostgreSQL wguest account is weak.

CWE-521

How to fix

Remediation Available

unitrends backupNVD

Affected:>= 10.0, < 10.5.5Fixed in:10.5.5CVE-2021-43036derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.86%probability of exploitation in 30 days

77thpercentile

Elevated risk: more likely to be exploited than 77% of all known CVEs.

References

Exploit2

Vendor Advisory1

helpdesk.kaseya.com

Related Vulnerabilities

Other CWE-521 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-17444	Critical	9.8	69%	-	Fix
CVE-2012-2441	High	8.5	8.6%	-	Fix
CVE-2017-3186	Critical	9.8	6.1%	-	-
CVE-2018-1000134	Critical	9.8	4.9%	-	-
CVE-2019-18988	High	7.0	4.7%	KEV	-
CVE-2017-6339	Medium	6.5	4.1%	-	-

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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.