VulnerabilityPublished 21 Dec 2024Updated 3 Nov 2025

CVE-2024-51464: IBM · Authentication Bypass Using an Alternate Path or Channel

Affects IBMSource CVE Database V5

Public exploit available (Exploit-DB) · CVSS 4.3 Medium.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score

4.3Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 1.4% chance of exploitation in 30 days – higher than 72% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: Low
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

Disclosed: evidence found.
CVE published 21 Dec 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: evidence found.
1 Exploit-DB entry, 115 days after disclosure
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

CVE ID reserved
by IBM Corporation
28 Oct 202410:50 UTC, 54 days before disclosure
CVE published
on cve.org
21 Dec 202413:44 UTC, t = 0
First Exploit-DB entry (opens in a new tab)
IBMi Navigator 7.5 - HTTP Security Token Bypass
15 Apr 2025, 115 days after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
IBM	Affected =7.3 =7.4 =7.5	Fixed in–

AI-suggested

Monitor IBM’s official security advisories closely and apply patches or updates for IBM i versions 7.3, 7.4, and 7.5 as soon as they are released to address CVE-2024-51464.
Restrict access to the Navigator for i interface using network segmentation, firewall rules, and VPNs to limit exposure to trusted users and networks only.
Enforce strong authentication mechanisms and consider multi-factor authentication (MFA) for all users accessing Navigator for i to reduce the risk of credential compromise.
Implement detailed logging and continuous monitoring of Navigator for i activities to detect anomalous or unauthorized operations indicative of exploitation attempts.
Conduct regular audits of user privileges and Navigator for i configurations to ensure least privilege principles are maintained.
Educate system administrators and users about the risks of credential misuse and the importance of secure access practices.
Temporarily disable or limit Navigator for i functionality if feasible until patches are applied, especially in high-risk environments.
Use intrusion detection/prevention systems (IDS/IPS) tuned to detect suspicious crafted requests targeting Navigator for i endpoints. These targeted mitigations go beyond generic advice by focusing on access control, monitoring, and operational hygiene specific to the IBM i Navigator environment.

Description

IBM i 7.3, 7.4, and 7.5 is vulnerable to bypassing Navigator for i interface restrictions. By sending a specially crafted request, an authenticated attacker could exploit this vulnerability to remotely perform operations that the user is not allowed to perform when using Navigator for i.

Impact

For European organizations, the impact of CVE-2024-51464 primarily concerns the integrity of IBM i system operations managed via Navigator for i. Unauthorized operations could lead to improper configuration changes, data manipulation, or disruption of business processes dependent on IBM i systems. While confidentiality and availability are not directly affected, integrity violations can result in compliance issues, operational disruptions, and potential financial losses. Sectors such as finance, manufacturing, utilities, and government agencies that rely heavily on IBM i platforms for critical workloads are at heightened risk. The vulnerability’s exploitation could facilitate insider threats or lateral movement by attackers who have obtained valid credentials, increasing the risk of broader compromise. Given the centralized role of Navigator for i in system management, unauthorized actions could cascade into systemic issues affecting multiple services. European organizations with remote access to IBM i systems are particularly vulnerable if network segmentation and access controls are insufficient. The medium severity rating underscores the need for timely remediation to prevent escalation of impact.

CWE-288Authentication Bypass Using an Alternate Path or Channel (opens in a new tab)
Base weaknessOWASP Top 10 A07:2025: Authentication Failures (opens in a new tab)
The product requires authentication, but the product has an alternate path or channel that does not require authentication.
Architecture and Design
Funnel all access through a single choke point to simplify how users can access a resource. For every access, perform a check to determine if the user has permissions to access the resource.
OWASP Cheat Sheets
OWASP Authentication (opens in a new tab)
OWASP ASVS 4.0.3
V1.2.3 (opens in a new tab)
V1.2.2 (opens in a new tab)
V1.2.4 (opens in a new tab)
Attack patterns
Directory Indexing (opens in a new tab)
Exploitation of Thunderbolt Protection Flaws (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

Timeline

What to do

Affected software

Description

AI analysisMachine-generated, updated 3 Nov 2025, 23:27 UTC

Public exploits and detection1 Exploit-DB entry

WeaknessesCWE-288

Technical details

References

Community reviews

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