CVE-2021-22524Network attack vector

Denial of service via undisclosed XML injection

Published Sep 13, 2021 · Updated Sep 17, 2024

XML injection in OpenText NetIQ Access Manager before 4.5.4 and in 5.0 before 5.0.1 allows remote authenticated users to interrupt service. OpenText states that XML injection causes the denial of service but has not published the affected component, input field, parser operation, or request path. Exploitation requires high privileges and user interaction, and the published impact is limited to loss of availability.

CVSS severity4.9
Medium
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XML injection in OpenText NetIQ Access Manager before 4.5.4 and in 5.0 before 5.0.1 allows remote authenticated users to interrupt service. OpenText states that XML injection causes the denial of service but has not published the affected component, input field, parser operation, or request path. Exploitation requires high privileges and user interaction, and the published impact is limited to loss of availability.

The record

CVE
CVE-2021-22524
Published
Sep 13, 2021
Updated
Sep 17, 2024
Vendor
OpenText
Product
NetIQ Access Manager
Classifications
CWE-91, T1499
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=NetIQ Access Manager <5.0.1 changes=[{"at":"4.5.4","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

OpenText · NetIQ Access Managerversion=NetIQ Access Manager <5.0.1 changes=[{"at":"4.5.4","status":"unaffected"}]

Published CVSS scores

4.9NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
5.4OpenTextCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:N/A:H
4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:N/A:P

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-91XML Injection (aka Blind XPath Injection)
T1499Endpoint Denial of Service

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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