CVE-2021-38126Network attack vector

Browser script execution via insufficient input validation

Published Jan 14, 2022 · Updated Aug 4, 2024

Cross-site scripting in OpenText ArcSight Enterprise Security Manager 7.4.x and 7.5.x allows remote attackers to execute browser scripts. The web-based management interface insufficiently validates user-supplied input, but public sources do not name the affected endpoint or parameter. Exploitation requires user interaction with a crafted link and can expose browser-accessible information or alter content in the interface.

CVSS severity6.1
Medium
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in OpenText ArcSight Enterprise Security Manager 7.4.x and 7.5.x allows remote attackers to execute browser scripts. The web-based management interface insufficiently validates user-supplied input, but public sources do not name the affected endpoint or parameter. Exploitation requires user interaction with a crafted link and can expose browser-accessible information or alter content in the interface.

The record

CVE
CVE-2021-38126
Published
Jan 14, 2022
Updated
Aug 4, 2024
Vendor
OpenText
Product
ArcSight Enterprise Security Manager
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=Micro Focus ArcSight ESM 7.4.x and 7.5.x

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenText · ArcSight Enterprise Security Managerversion=Micro Focus ArcSight ESM 7.4.x and 7.5.x

Published CVSS scores

6.1NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3NISTAV:N/AC:M/Au:N/C:N/I:P/A:N

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

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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