CVE-2021-43036

Q: How do I fix CVE-2021-43036?

Upgrade unitrends backup to 10.5.5 or later.

Q: Is CVE-2021-43036 being actively exploited?

Not that we know of. CVE-2021-43036 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.9% is the estimated probability that it will be exploited in the next 30 days. That is higher than 77% of all scored CVEs.

Q: How severe is CVE-2021-43036?

CVE-2021-43036 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2021-43036 affect?

Published advisories record a fix for unitrends backup (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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	4.7%	-	-
CVE-2019-18988	High	7.0	4.7%	KEV	-
CVE-2017-6339	Medium	6.5	4.1%	-	-

Common questions

How do I fix CVE-2021-43036?

Upgrade unitrends backup to 10.5.5 or later.

Is CVE-2021-43036 being actively exploited?

Not that we know of. CVE-2021-43036 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.9% is the estimated probability that it will be exploited in the next 30 days. That is higher than 77% of all scored CVEs.

How severe is CVE-2021-43036?

CVE-2021-43036 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2021-43036 affect?

Published advisories record a fix for unitrends backup (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2021-43036

Markdown

[![CVE-2021-43036](https://tridentstack.com/cve/badge/CVE-2021-43036.svg)](https://tridentstack.com/cve/CVE-2021-43036)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-43036"><img src="https://tridentstack.com/cve/badge/CVE-2021-43036.svg" alt="CVE-2021-43036"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

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.