CVE-2021-32966Network attack vector

LDAP credential disclosure via unencrypted referral connections

Published May 25, 2022 · Updated Apr 16, 2025

Cleartext transmission in Interoperability Solution XDS 2.5 through 3.11 and 2018-1 through 2021-1 allows remote attackers to read LDAP credentials. When LDAP over TLS is enabled and a domain controller returns an LDAP referral, the solution follows the referral using a cleartext network connection and sends the LDAP system credentials. Exploitation requires access to that network channel and exposes the credentials without reported integrity or availability effects.

CVSS severity3.7
Low
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext transmission in Interoperability Solution XDS 2.5 through 3.11 and 2018-1 through 2021-1 allows remote attackers to read LDAP credentials. When LDAP over TLS is enabled and a domain controller returns an LDAP referral, the solution follows the referral using a cleartext network connection and sends the LDAP system credentials. Exploitation requires access to that network channel and exposes the credentials without reported integrity or availability effects.

The record

CVE
CVE-2021-32966
Published
May 25, 2022
Updated
Apr 16, 2025
Vendor
Philips
Product
Interoperability Solution XDS
Classifications
CWE-319, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record 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=2018-1 through 2021-1
  2. Affected versionversion=2.5 through 3.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Philips · Interoperability Solution XDSversion=2018-1 through 2021-1; version=2.5 through 3.11

Published CVSS scores

3.7ICS-CERTCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:P/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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-319Cleartext Transmission of Sensitive Information
T1557Adversary-in-the-Middle

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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