CVE-2024-23985VulnerabilityPublished 25 Jan 2024Updated 30 May 2025

CVE-2024-23985: n/a

Source CVE Database V5

Not known to be exploited · public exploit available (Metasploit) · CVSS 7.5 High.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score

7.5High

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

EPSS: 3.5% chance of exploitation in 30 days – higher than 89% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

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

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: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
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: None: There is no loss of integrity within the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Jan 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: evidence found.
1 Metasploit module
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

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 2026-10-25.

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 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
n/a n/a	Affected =6.4.017	Fixed in–

AI-suggested

To mitigate this vulnerability, organizations should first verify if they are running EzServer 6.4.017 or any affected versions. Deploying intrusion detection/prevention systems (IDS/IPS) with signatures or anomaly detection for unusually long RNTO commands can help block exploit attempts. Network segmentation to isolate FTP servers from critical infrastructure reduces potential impact. Administrators should also consider disabling or limiting FTP services if not essential or migrating to more secure file transfer protocols (e.g., SFTP or FTPS) that provide better security controls. Monitoring server logs for abnormal command lengths and crashes can provide early warning signs. Once a vendor patch or update is released, prompt application is critical. Additionally, maintaining regular backups and having incident response plans for DoS scenarios will improve resilience.

Description

EzServer 6.4.017 allows a denial of service (daemon crash) via a long string, such as one for the RNTO command.

Impact

For European organizations using EzServer 6.4.017, this vulnerability poses a significant risk to service availability. FTP servers are often used for file transfers in various industries including manufacturing, logistics, and IT services. A successful DoS attack could disrupt critical file transfer operations, delay business processes, and cause downtime. This is particularly impactful for organizations with automated workflows dependent on FTP transfers. Additionally, prolonged or repeated crashes could lead to reputational damage and increased operational costs due to recovery efforts. Since the vulnerability can be exploited remotely without authentication, attackers can cause disruption without needing insider access, increasing the threat surface. Organizations in sectors with stringent uptime requirements, such as finance, healthcare, and public services, may face compliance and regulatory challenges if service availability is compromised.

References

packetstormsecurity.com/files/176663/EzServer-6.4.017-Denial-Of-Service.html (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 8 Jul 2025, 19:56 UTC

Public exploits and detection1 Metasploit module

Technical details

References

Community reviews

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