VulnerabilityPublished 29 Aug 2025

CVE-2025-54777: Konica Minolta Multiple products in bizhub series · Uncaught Exception

Affects Konica Minolta Multiple products in bizhub seriesSource CVE Database V5

Not known to be exploited · CVSS 4.3 Medium.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.0 base score

4.3Medium

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

EPSS: 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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

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

Attack Vector: Adjacent: The vulnerable component is bound to the network stack, but the attack is limited at the protocol level to a logically adjacent topology. This can mean an attack must be launched from the same shared physical (e.g., Bluetooth or IEEE 802.11) or logical (e.g., local IP subnet) network, or from within a secure or otherwise limited administrative domain (e.g., MPLS, secure VPN to an administrative network zone).
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: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 29 Aug 2025
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 using Konica Minolta bizhub series devices should take several specific steps beyond generic advice: 1) Monitor vendor communications closely for official patches or firmware updates addressing CVE-2025-54777 and apply them promptly once available. 2) Restrict network access to the Web Connection interface to trusted management networks only, using network segmentation and firewall rules to limit exposure to adjacent network attackers. 3) Disable or restrict the import of S/MIME email certificates on these devices if not required for business operations, reducing the attack surface. 4) Implement network monitoring to detect unusual certificate import activities or repeated failures that could indicate exploitation attempts. 5) Train IT staff on the potential impact of this vulnerability to ensure rapid response if the Web Connection feature becomes unavailable. 6) Consider alternative remote management methods or backup administrative access to maintain device control in case of DoS. 7) Conduct regular security assessments of multifunction devices to identify and remediate similar vulnerabilities proactively.

Description

Uncaught exception issue exists in Multiple products in bizhub series. If a malformed file is imported as an S/MIME Email certificate, it may cause a denial-of-service issue that disable the Web Connection feature.

Impact

For European organizations, the impact of CVE-2025-54777 primarily concerns operational disruption. The bizhub series devices are commonly used in office environments for printing, scanning, and document management. Disabling the Web Connection feature can hinder remote device management, firmware updates, and monitoring, potentially delaying incident response and maintenance activities. This could lead to increased downtime or reliance on manual device management, affecting productivity. While the vulnerability does not expose sensitive data or allow code execution, the denial of service on management interfaces could be leveraged in targeted attacks to disrupt business workflows, especially in sectors relying heavily on multifunction devices such as finance, legal, healthcare, and government agencies. Additionally, organizations with strict compliance requirements for device availability and uptime may face regulatory or contractual risks if service interruptions occur. The lack of known exploits reduces immediate risk, but the ease of triggering the issue without authentication and user interaction means attackers with network proximity could exploit it to cause disruption.

References

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