Which products and versions are affected by CVE-2020-5791?

Affected: Nagios XI versions >= 5.7.3. The full list is in the CVE brief.

Is CVE-2020-5791 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2020-5791 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2020-5791?

Public exploit code is available.

Is there a fix for CVE-2020-5791?

Fixed versions are available, including Nagios XI <=5.7.3, Nagios XI 5.7.3.

How urgently should CVE-2020-5791 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2020-5791

Q: What is CVE-2020-5791?

Improper neutralization of special elements used in an OS command in Nagios XI 5.7.3 allows a remote, authenticated admin user to execute operating system commands with the privileges of the apache user.

Q: How urgently should CVE-2020-5791 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

HighPublic exploit

Improper neutralization of special elements used in an OS command in Nagios XI 5.7.3 allows a remote, authenticated admin user to execute operating system commands with the privileges of the apache user.

Published Apr 21, 2021 · Updated Aug 4, 2024 · Also known as TR-21-0339

Key Facts

Patch immediately

CVE-2020-5791 is a high-severity vulnerability (CVSS 7.2 v3.1) affecting Nagios XI.
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 79% probability of exploitation in the next 30 days.
Fixed versions are available, including Nagios XI <=5.7.3, Nagios XI 5.7.3.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

7.2

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

EPSS (30-day exploit likelihood)

79%

Higher than 99.5% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2020-5791 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
Nagios XINagios	>= 5.7.3	5.7.3

Patched Releases

Nagios XI

<=5.7.3

Timeline

Publicly disclosed
Apr 21, 2021
Last updated
Aug 4, 2024

Weakness Type

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

References

3 more references in the full CVE brief

FAQ

Common Questions.

Improper neutralization of special elements used in an OS command in Nagios XI 5.7.3 allows a remote, authenticated admin user to execute operating system commands with the privileges of the apache user.
Affected: Nagios XI versions >= 5.7.3. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Nagios XI <=5.7.3, Nagios XI 5.7.3.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2020-5791 Running On Your Attack Surface?

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