CVE-2024-45675

Administrator impersonation via passwordless local DB-Access login

Published Dec 2, 2025 · Updated Feb 26, 2026

Authentication bypass in IBM Informix Dynamic Server 14.10 on Windows allows local users to log in as an administrator without a password. When DB-Access initiates a local connection, the server accepts another login identity without that identity's password; IBM has not disclosed the responsible code path or validation error. Any local Windows account can therefore obtain Informix administrator privileges and act with that database authority.

CVSS severity8.4
High
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in IBM Informix Dynamic Server 14.10 on Windows allows local users to log in as an administrator without a password. When DB-Access initiates a local connection, the server accepts another login identity without that identity's password; IBM has not disclosed the responsible code path or validation error. Any local Windows account can therefore obtain Informix administrator privileges and act with that database authority.

The record

CVE
CVE-2024-45675
Published
Dec 2, 2025
Updated
Feb 26, 2026
Vendor
IBM
Product
IBM Informix Dynamic Server
Classifications
CWE-309, T1068
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 2, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 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?

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  1. Affected versionversion=14.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

IBM · IBM Informix Dynamic Serverversion=14.10

Published CVSS scores

8.4IBM X-ForceCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-309Use of Password System for Primary Authentication
T1068Exploitation for Privilege Escalation

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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