CVE-2025-54859VulnerabilityPublished 16 Oct 2025

CVE-2025-54859: NEOJAPAN desknet's NEO · Cross-site scripting (XSS)

Affects NEOJAPAN desknet's NEOSource CVE Database V5

Not known to be exploited · CVSS 4.8 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.0 base score

4.8Medium

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

EPSS: 0.3% chance of exploitation in 30 days – higher than 22% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: High
User Interaction: Required
Scope: Changed
Confidentiality: Low
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: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Changed: An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to 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

Disclosed: evidence found.
CVE published 16 Oct 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 2026-10-26.

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
NEOJAPAN Inc. desknet's NEO	Affected <=9.0	Fixed in–

AI-suggested

1. Apply official patches or updates from NEOJAPAN Inc. as soon as they become available to remediate the vulnerability. 2. Restrict high-privilege user accounts to only those necessary and enforce the principle of least privilege to reduce the risk of malicious script injection. 3. Implement strict input validation and sanitization on all user-supplied content within desknet's NEO to prevent injection of malicious scripts. 4. Deploy Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in users' browsers. 5. Conduct regular security awareness training for users, emphasizing the risks of interacting with untrusted content even within internal platforms. 6. Monitor logs and user activity for unusual behavior indicative of exploitation attempts, such as unexpected script injections or privilege escalations. 7. Consider network segmentation to isolate critical collaboration platforms and limit the spread of potential attacks. 8. Use web application firewalls (WAFs) with rules tailored to detect and block XSS payloads targeting desknet's NEO.

Description

Stored cross-site scripting (XSS) vulnerability in desknet's NEO V9.0R2.0 and earlier allow execution of arbitrary JavaScript in a user’s web browser.

Impact

For European organizations, the impact of CVE-2025-54859 can be significant in environments where desknet's NEO is deployed, particularly in sectors relying heavily on collaboration platforms such as government, finance, and large enterprises. The stored XSS vulnerability could enable attackers to execute malicious scripts in the browsers of users with access to the platform, potentially leading to session hijacking, unauthorized data access, or lateral movement within the network. Although exploitation requires high privileges and user interaction, the risk remains for insider threats or compromised high-privilege accounts. The vulnerability does not directly affect system availability but can undermine confidentiality and integrity of sensitive communications. Given the collaborative nature of desknet's NEO, exploitation could facilitate broader attacks such as phishing campaigns or malware distribution within an organization. The medium CVSS score reflects a moderate risk, but the potential for targeted attacks against critical infrastructure or sensitive data repositories in Europe elevates the importance of timely mitigation.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 16 Oct 2025, 10:29 UTC

Technical details

References

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