CVE-2021-22519Network attack vector

Arbitrary code execution via undisclosed mechanism

Published May 28, 2021 · Updated Aug 3, 2024

Arbitrary code execution in Micro Focus SiteScope allows remote attackers to run arbitrary code on affected installations via unspecified vectors. OpenText has not published the affected component, entry point, crafted input, or wrong operation that enables execution. Published evidence conflicts on whether exploitation is remotely reachable or requires local low-privileged access; arbitrary code execution is the only established consequence.

CVSS severity8.8
High
EPSS probability2.01%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary code execution in Micro Focus SiteScope allows remote attackers to run arbitrary code on affected installations via unspecified vectors. OpenText has not published the affected component, entry point, crafted input, or wrong operation that enables execution. Published evidence conflicts on whether exploitation is remotely reachable or requires local low-privileged access; arbitrary code execution is the only established consequence.

The record

CVE
CVE-2021-22519
Published
May 28, 2021
Updated
Aug 3, 2024
Vendor
Micro Focus
Product
SiteScope
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 28, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=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)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Micro Focus · SiteScopeversion=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)

Published CVSS scores

8.8Micro FocusCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
7.5NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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