CVE-2026-4256Network attack vector

Unauthenticated directory-data disclosure via LDAP injection

Published Jul 9, 2026 · Updated Jul 9, 2026

LDAP injection in PEAKUP Teknoloji A.Ş. PassGate through 30042026 allows remote attackers to read directory data and make limited changes. The public advisory does not identify the affected endpoint, parameter, or LDAP-query construction that fails to neutralize special elements. No privileges or user interaction are required; successful injection exposes directory confidentiality and permits limited integrity impact.

CVSS severity8.2
High
EPSS probability0.35%
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 PEAKUP Teknoloji A.Ş. PassGate through 30042026 allows remote attackers to read directory data and make limited changes. The public advisory does not identify the affected endpoint, parameter, or LDAP-query construction that fails to neutralize special elements. No privileges or user interaction are required; successful injection exposes directory confidentiality and permits limited integrity impact.

The record

CVE
CVE-2026-4256
Published
Jul 9, 2026
Updated
Jul 9, 2026
Vendor
PEAKUP Teknoloji A.Ş.
Product
PassGate
Classifications
CWE-90, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 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?

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

  1. Affected versionversion=0 <=30042026

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PEAKUP Teknoloji A.Ş. · PassGateversion=0 <=30042026

Published CVSS scores

8.2Computer Emergency Response Team of the Republic of TurkeyCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/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-90Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
T1190Exploit Public-Facing Application

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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