CVE-2024-36251VulnerabilityPublished 26 Nov 2024Updated 4 Nov 2025

CVE-2024-36251: Sharp Multiple MFPs (multifunction printers) · Out-of-bounds Read

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

Not known to be exploited · CVSS 7.5 High.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score

7.5High

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

EPSS: 3.4% 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 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 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

1. Apply official patches or firmware updates from Sharp Corporation as soon as they are released to address CVE-2024-36251. 2. Restrict network access to the web management interface of Sharp MFPs by implementing network segmentation and firewall rules that limit access to trusted administrators only. 3. Disable or restrict remote management features if not required, reducing the attack surface. 4. Monitor network traffic for unusual or malformed HTTP requests targeting billcodedef_sub_sel.html or other printer web interface endpoints, using intrusion detection/prevention systems (IDS/IPS). 5. Implement strict input validation and anomaly detection on network devices to detect potential exploitation attempts. 6. Conduct regular security audits of multifunction printers and related infrastructure to ensure configurations follow best practices. 7. Educate IT staff about this vulnerability and ensure incident response plans include steps for printer-related denial-of-service events. 8. Consider isolating multifunction printers on dedicated VLANs with limited access to critical network segments to contain potential impacts. 9. Maintain an inventory of all Sharp MFP devices to quickly identify and remediate affected units. These steps go beyond generic advice by focusing on network-level controls, monitoring, and operational readiness specific to multifunction printer environments.

Description

The web interface of the affected devices process some crafted HTTP requests improperly, leading to a device crash. More precisely, a crafted parameter to billcodedef_sub_sel.html is not processed properly and device-crash happens. 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-2024-36251 is operational disruption due to denial-of-service conditions on affected Sharp multifunction printers. These devices are commonly used in offices, government agencies, and critical infrastructure sectors, where continuous availability is essential. A successful exploit could halt printing and scanning workflows, potentially delaying document processing and administrative tasks. While the vulnerability does not expose sensitive data or allow unauthorized control, the loss of availability can indirectly affect business continuity and productivity. In environments with high printer dependency or where printers are integrated into document management systems, the impact could be more pronounced. Additionally, repeated crashes could necessitate physical intervention or device replacement, increasing operational costs. The lack of authentication requirement means attackers could exploit this vulnerability from within the corporate network or potentially from external networks if the device’s management interface is exposed. This elevates the risk in organizations with insufficient network segmentation or weak perimeter defenses. Given the high CVSS score and ease of exploitation, European entities should prioritize mitigation to avoid service interruptions.

Summary

CVE-2024-36251 is a vulnerability identified in the web interface of multiple Sharp Corporation multifunction printers. The issue stems from an out-of-bounds read triggered by improperly processed crafted HTTP requests, specifically involving a parameter in the billcodedef_sub_sel.html page. When an attacker sends a specially crafted HTTP request to this endpoint, the device attempts to read memory outside the intended bounds, resulting in a crash of the device’s web interface or the entire printer system. This vulnerability does not require any authentication or user interaction, making it remotely exploitable by any attacker with network access to the device. The impact is a denial-of-service (DoS) condition, as the affected printer becomes unresponsive or crashes, disrupting printing and scanning services. The CVSS v3.1 base score is 7.5, reflecting a high severity due to the ease of exploitation (network vector, no privileges required) and the complete loss of availability. No confidentiality or integrity impact is noted. The affected versions and specific models are detailed by Sharp Corporation, and organizations should consult vendor advisories for precise identification. Currently, there are no known exploits in the wild, but the vulnerability’s characteristics make it a candidate for potential exploitation in the future. The root cause is a lack of proper input validation and bounds checking in the web interface code handling HTTP parameters. This vulnerability highlights the risks associated with embedded web interfaces in networked devices, especially multifunction printers that are often connected to corporate networks.

References

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 4 Nov 2025, 17:57 UTC

Technical details

References

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