VulnerabilityPublished 26 Nov 2024Updated 4 Nov 2025

CVE-2024-28955: Sharp Multiple MFPs (multifunction printers) · Incorrect Permissions

Affects Sharp Multiple MFPs (multifunction printers)Source CVE Database V5

Not known to be exploited · CVSS 5.9 Medium.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score

5.9Medium

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

EPSS: 1.3% chance of exploitation in 30 days – higher than 70% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: High
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
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: High: A successful attack depends on conditions beyond the attacker's control. That is, a successful attack cannot be accomplished at will, but requires the attacker to invest in some measurable amount of effort in preparation or execution against the vulnerable component before a successful attack can be expected. For example, a successful attack may require an attacker to: gather knowledge about the environment in which the vulnerable target/component exists; prepare the target environment to improve exploit reliability; or inject themselves into the logical network path between the target and the resource requested by the victim in order to read and/or modify network communications (e.g., a man in the middle attack).
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: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 26 Nov 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
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 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

AI-suggested

European organizations should implement strict physical and logical access controls to restrict local access to Sharp MFP devices. This includes securing device locations, enforcing user authentication for device access, and monitoring device usage logs for unauthorized access attempts. Network segmentation should isolate MFPs from sensitive network segments to limit potential lateral movement. Organizations should consult Sharp Corporation's official advisories for specific affected models and apply any available firmware updates or patches promptly once released. Additionally, disabling or restricting the generation of coredump files, if configurable, can reduce exposure. Regular security audits and vulnerability assessments of MFPs should be conducted to detect misconfigurations. Employing endpoint detection and response (EDR) solutions to monitor unusual activity on devices may also help detect exploitation attempts. Finally, educating staff about the risks of local device access and enforcing policies to prevent unauthorized use are critical.

Description

Affected devices create coredump files when crashed, storing them with world-readable permission. Any local user of the device can examine the coredump files, and research the memory contents. As for the details of affected product names, model numbers, and versions, refer to the information provided by the respective vendors listed under [References].

Impact

For European organizations, the primary impact of CVE-2024-28955 is the potential exposure of sensitive information stored in the memory of Sharp MFP devices. This could include user credentials, network configuration details, or other confidential data that might be leveraged for further attacks or data breaches. Organizations with shared or public access to these devices, such as in office environments, government agencies, or critical infrastructure sectors, face increased risk if local access controls are weak. The vulnerability does not directly affect device integrity or availability but could facilitate lateral movement or privilege escalation if attackers extract sensitive credentials. Given the medium CVSS score and the requirement for local access, the threat is moderate but significant in environments where physical or local network access to MFPs is not tightly controlled. The lack of known exploits reduces immediate risk but does not eliminate the need for proactive mitigation.

Summary

CVE-2024-28955 is a vulnerability identified in multiple Sharp Corporation multifunction printers (MFPs) where the devices generate coredump files upon system crashes. These coredump files, which contain snapshots of the device's memory at the time of failure, are stored with world-readable permissions. This incorrect permission assignment means that any local user with access to the device can read these files and potentially extract sensitive information from the memory contents, such as credentials, configuration data, or other confidential information. The vulnerability does not require prior authentication or user interaction but does require local access to the device, which limits remote exploitation. The CVSS v3.1 base score is 5.9, indicating medium severity, with the vector indicating network attack vector (AV:N), high attack complexity (AC:H), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), high confidentiality impact (C:H), no integrity impact (I:N), and no availability impact (A:N). No known exploits are currently reported in the wild, and no specific patches or mitigation links were provided in the source data. The affected versions and models are detailed by Sharp Corporation in their advisories. This vulnerability primarily threatens confidentiality by exposing sensitive memory data to unauthorized local users on the device.

References

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 4 Nov 2025, 17:55 UTC

Technical details

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