CVE-2023-4727Network attack vector

Authentication bypass via unescaped LDAP session filter

Published Jun 11, 2024 · Updated Jun 26, 2026

LDAP injection in Dogtag PKI and pki-core allows remote attackers to bypass token authentication and assume an existing LDAP session. LDAPSecurityDomainSessionTable.sessionExists() and getStringValue() concatenate the sessionID parameter into an LDAP cn filter without escaping, so sessionID=* matches a saved session. No prior privileges or user interaction are required, but access is limited to an adjacent network and exploitation depends on an existing LDAP session.

CVSS severity7.5
High
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

LDAP injection in Dogtag PKI and pki-core allows remote attackers to bypass token authentication and assume an existing LDAP session. LDAPSecurityDomainSessionTable.sessionExists() and getStringValue() concatenate the sessionID parameter into an LDAP cn filter without escaping, so sessionID=* matches a saved session. No prior privileges or user interaction are required, but access is limited to an adjacent network and exploitation depends on an existing LDAP session.

The record

CVE
CVE-2023-4727
Published
Jun 11, 2024
Updated
Jun 26, 2026
Vendor
Red Hat
Product
Red Hat Enterprise Linux 8.6 Telecommunications Update Service
Classifications
CWE-305, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Red Hat · Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceAffected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportAffected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 7Affected versions are unavailable in this record.
Red Hat · Red Hat Certificate SystemAffected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 9.2 Extended Update SupportAffected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsAffected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceAffected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 8.8 Extended Update SupportAffected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsAffected versions are unavailable in this record.
Keycloak · Keycloakversion=0 <11.5.1
Red Hat · Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsAffected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportAffected versions are unavailable in this record.

Published CVSS scores

7.5Red HatCVSS:3.1/AV:A/AC:H/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

CWE-305Authentication Bypass by Primary Weakness
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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