What is the CVSS score of CVE-2021-26991?

CVE-2021-26991 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 1.2%.

Is there a patch available for CVE-2021-26991?

Yes, a patch is available for CVE-2021-26991. Update the affected software to the latest version immediately.

Cloud Manager CVE-2021-26991

HIGH

2021-03-19 security-alert@netapp.com

Information Disclosure Cloud Manager Netapp

7.5

CVSS 3.1 · NVD

View

Vulnerability Assessment

Impact	CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 1.2% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

Cloud Manager versions prior to 3.9.4 contain an insecure Cross-Origin Resource Sharing (CORS) policy which could allow a remote attacker to interact with Cloud Manager. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Cloud Manager versions prior to 3.9.4 contain an insecure Cross-Origin Resource Sharing (CORS) policy which could allow a remote attacker to interact with Cloud Manager. Affected products include: Netapp Cloud Manager. Version information: prior to 3.9.4.

Know when Cloud Manager gets its next vulnerability

Watch products and get an email when something new is published
Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 7.5 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

DescriptionNVD

Cloud Manager versions prior to 3.9.4 contain an insecure Cross-Origin Resource Sharing (CORS) policy which could allow a remote attacker to interact with Cloud Manager.

Threat Intelligence Overview

EPSS Score

1.2%

Top 36% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 1.2%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +38

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)NVD

cpe:2.3:a:netapp:cloud_manager:*:*:*:*:*:*:*:*

More in Cloud Manager

View all

CVE-2021-44228 CRITICAL Act Now POC

10.0 Dec 10

Apache Log4j2 contains a critical JNDI injection vulnerability known as 'Log4Shell' that allows unauthenticated remote c

CVE-2021-45105 MEDIUM This Month

5.9 Dec 18

Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) did not protect from uncontrolled recursio

CVE-2021-23337 HIGH Act Now POC

7.2 Feb 15

Lodash versions prior to 4.17.21 are vulnerable to Command Injection via the template function. Rated high severity (CVS

CVE-2021-28651 HIGH This Week POC

7.5 May 27

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Rated high severity (CVSS 7.5), this vulnerability is

CVE-2021-28165 HIGH This Week POC

7.5 Apr 01

In Eclipse Jetty 7.2.2 to 9.4.38, 10.0.0.alpha0 to 10.0.1, and 11.0.0.alpha0 to 11.0.1, CPU usage can reach 100% upon re

CVE-2021-42550 MEDIUM This Month POC

6.6 Dec 16

In logback version 1.2.7 and prior versions, an attacker with the required privileges to edit configurations files could

CVE-2021-31807 MEDIUM This Month POC

6.5 Jun 08

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Rated medium severity (CVSS 6.5), this vulnerability

CVE-2021-31808 MEDIUM This Month POC

6.5 May 27

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Rated medium severity (CVSS 6.5), this vulnerability

CVE-2021-31806 MEDIUM This Month POC

6.5 May 27

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Rated medium severity (CVSS 6.5), this vulnerability

CVE-2023-0421 MEDIUM This Month POC

6.1 May 08

The Cloud Manager WordPress plugin through 1.0 does not sanitise and escape the query param ricerca before outputting it

CVE-2023-41748 CRITICAL Act Now

9.8 Aug 31

Remote command execution due to improper input validation. Rated critical severity (CVSS 9.8), this vulnerability is rem

CVE-2023-41746 CRITICAL Act Now

9.8 Aug 31

Remote command execution due to improper input validation. Rated critical severity (CVSS 9.8), this vulnerability is rem

Same technique Information Disclosure

View all

CVE-2019-2725 CRITICAL POC

9.8

CVE-2021-34523 CRITICAL POC

9.0

CVE-2013-2251 CRITICAL POC

9.8

CVE-2017-5638 CRITICAL POC

9.8

CVE-2025-24813 CRITICAL POC

9.8

CVE-2025-68613 HIGH POC

8.8

CVE-2015-1701 HIGH POC

7.8

CVE-2017-0147 HIGH POC

7.5

References

Advisories & patches

PATCH https://security.netapp.com/advisory/NTAP-20210318-0002

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back