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CVE-2021-22519

27
FAUCET Score

CVE-2021-22519 is a critical arbitrary code execution vulnerability affecting multiple versions of Micro Focus SiteScope, from 11.40 through 2020.10. With a CVSS score of 9.8, it allows unauthenticated remote attackers to execute arbitrary code on vulnerable systems with low attack complexity and no user interaction required, leading to complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), and it is not listed in CISA's KEV catalog. Community discussion and media coverage for this CVE are also notably absent.

Impacted Technologies

VendorProductVersion(s)CPE
11.40CPE matchmatch criteria
cpe:2.3:a:microfocus:sitescope:11.40:*:*:*:*:*:*:*
11.41CPE matchmatch criteria
cpe:2.3:a:microfocus:sitescope:11.41:*:*:*:*:*:*:*
11.50CPE matchmatch criteria
cpe:2.3:a:microfocus:sitescope:11.50:*:*:*:*:*:*:*
11.51CPE matchmatch criteria
cpe:2.3:a:microfocus:sitescope:11.51:*:*:*:*:*:*:*
11.60CPE matchmatch criteria
cpe:2.3:a:microfocus:sitescope:11.60:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.01%
Probability of exploitation in next 30 days
EPSS Percentile
78.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0201 is in the 67th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

softwaresupport.softwaregrp.com / doc/KM03811028