CVE-2023-27866Network attack vector

Authenticated code execution via unvalidated LDAP URL

Published Jun 28, 2023 · Updated Oct 28, 2024

JNDI injection in IBM Informix JDBC Driver 4.10.x and 4.50.x allows remote authenticated users to execute arbitrary code. The driver accepts an LDAP_URL value in the connection string and performs a JNDI LDAP lookup without verifying the supplied URL. Reachability requires driver or application code to accept an attacker-controlled connection string; successful exploitation runs code in the application process.

CVSS severity6.3
Medium
EPSS probability1.03%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

JNDI injection in IBM Informix JDBC Driver 4.10.x and 4.50.x allows remote authenticated users to execute arbitrary code. The driver accepts an LDAP_URL value in the connection string and performs a JNDI LDAP lookup without verifying the supplied URL. Reachability requires driver or application code to accept an attacker-controlled connection string; successful exploitation runs code in the application process.

The record

CVE
CVE-2023-27866
Published
Jun 28, 2023
Updated
Oct 28, 2024
Vendor
IBM
Product
IBM Informix JDBC Driver
Classifications
CWE-94, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 28, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=4.10, 4.50

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM Informix JDBC Driverversion=4.10, 4.50

Published CVSS scores

6.3IBM CorporationCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
9.8NISTCVSS:3.1/AV:N/AC:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1203Exploitation for Client Execution

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo