What is the CVSS score of CVE-2021-22519?

CVE-2021-22519 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 2.0%.

Sitescope CVE-2021-22519

CRITICAL

2021-05-28 security@opentext.com

RCE Sitescope Microfocus

9.8

CVSS 3.1 · NVD

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Vulnerability Assessment

Impact	CVSS score of 9.8 (CRITICAL). 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 critical-severity affected system.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.

No patch listed yet 2.0% exploitation probability (EPSS)

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AnalysisAI

Execute arbitrary code vulnerability in Micro Focus SiteScope product, affecting versions 11.40,11.41 , 2018.05(11.50), 2018.08(11.51), 2018.11(11.60), 2019.02(11.70), 2019.05(11.80), 2019.08(11.90),. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

Execute arbitrary code vulnerability in Micro Focus SiteScope product, affecting versions 11.40,11.41 , 2018.05(11.50), 2018.08(11.51), 2018.11(11.60), 2019.02(11.70), 2019.05(11.80), 2019.08(11.90), 2019.11(11.91), 2020.05(11.92), 2020.10(11.93). The vulnerability could allow remote attackers to execute arbitrary code on affected installations of SiteScope. Affected products include: Microfocus Sitescope.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.8 CRITICAL

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

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

High

Integrity

High

Availability

High

DescriptionNVD

Execute arbitrary code vulnerability in Micro Focus SiteScope product, affecting versions 11.40,11.41 , 2018.05(11.50), 2018.08(11.51), 2018.11(11.60), 2019.02(11.70), 2019.05(11.80), 2019.08(11.90), 2019.11(11.91), 2020.05(11.92), 2020.10(11.93). The vulnerability could allow remote attackers to execute arbitrary code on affected installations of SiteScope.

Threat Intelligence Overview

EPSS Score

2.0%

Top 21% 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 CRITICAL

CISA KEV No

Public POC No

EPSS 2.0%

Patch available No

Active threat No

Deciding rule

CRITICAL severity

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: +2

CVSS: +49

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)NVD

cpe:2.3:a:microfocus:sitescope:11.40:*:*:*:*:*:*:*

cpe:2.3:a:microfocus:sitescope:11.41:*:*:*:*:*:*:*

cpe:2.3:a:microfocus:sitescope:11.50:*:*:*:*:*:*:*

cpe:2.3:a:microfocus:sitescope:11.51:*:*:*:*:*:*:*

cpe:2.3:a:microfocus:sitescope:11.60:*:*:*:*:*:*:*

cpe:2.3:a:microfocus:sitescope:11.70:*:*:*:*:*:*:*

cpe:2.3:a:microfocus:sitescope:11.80:*:*:*:*:*:*:*

cpe:2.3:a:microfocus:sitescope:11.90:*:*:*:*:*:*:*

cpe:2.3:a:microfocus:sitescope:11.91:*:*:*:*:*:*:*

cpe:2.3:a:microfocus:sitescope:11.92:*:*:*:*:*:*:*

cpe:2.3:a:microfocus:sitescope:11.93:*:*:*:*:*:*:*

More in Sitescope

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CVE-2013-2367 CRITICAL Emergency POC

10.0 Jul 31

Multiple unspecified vulnerabilities in HP SiteScope 11.20 and 11.21, when SOAP is used, allow remote attackers to execu

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CVE-2013-6207 CRITICAL Act Now

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Unspecified vulnerability in HP SiteScope 11.1x before 11.13, 11.2x before 11.24.391, and 11.3x before 11.30.521 allows

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References

Advisories & patches

REF https://softwaresupport.softwaregrp.com/doc/KM03811028

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