CVE-2021-22532Network attack vector

Authenticated service interruption via NLDAP resource exhaustion

Published Sep 12, 2024 · Updated Sep 12, 2024

Denial of service in NLDAP in OpenText eDirectory before 9.2.4.0000 allows remote authenticated users to interrupt directory service. OpenText identifies unbounded resource allocation but has not published the affected NLDAP code path, the exhausted resource, or the triggering request property. Network reachability and low-privileged credentials are required, and the public record does not distinguish whether exploitation causes a hang, crash, or other interruption.

CVSS severity7.5
High
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in NLDAP in OpenText eDirectory before 9.2.4.0000 allows remote authenticated users to interrupt directory service. OpenText identifies unbounded resource allocation but has not published the affected NLDAP code path, the exhausted resource, or the triggering request property. Network reachability and low-privileged credentials are required, and the public record does not distinguish whether exploitation causes a hang, crash, or other interruption.

The record

CVE
CVE-2021-22532
Published
Sep 12, 2024
Updated
Sep 12, 2024
Vendor
OpenText
Product
eDirectory
Classifications
CWE-770, T1499.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 12, 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=9.2.4.0000 <<

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenText · eDirectoryversion=9.2.4.0000 <<

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.6OpenTextCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.002Service Exhaustion

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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