CVE-2025-64130VulnerabilityPublished 26 Nov 2025

CVE-2025-64130: Zenitel TCIV-3+ · Cross-site Scripting

Affects Zenitel TCIV-3+Source CVE Database V5

Not known to be exploited · CVSS 9.8 Critical.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score

9.8Critical

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

EPSS: 0.9% chance of exploitation in 30 days – higher than 59% 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:H/I:H/A:H

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
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: 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: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to 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 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
Zenitel TCIV-3+	Affected =0	Fixed in–

AI-suggested

1. Immediately monitor Zenitel’s official channels for patches and apply them as soon as they become available. 2. Until patches are released, restrict access to the TCIV-3+ management interfaces to trusted internal networks using firewall rules or VPNs. 3. Deploy Web Application Firewalls (WAFs) with robust XSS detection and filtering capabilities to block malicious payloads targeting the device. 4. Conduct thorough input validation and sanitization on any web-facing components interacting with the device, if customization is possible. 5. Implement network segmentation to isolate TCIV-3+ devices from general user networks and limit lateral movement opportunities. 6. Regularly audit device logs and network traffic for signs of suspicious activity or exploitation attempts. 7. Educate users and administrators about the risks of clicking unknown links or accessing untrusted URLs related to the device. 8. Consider disabling unnecessary web interfaces or services on the device to reduce the attack surface.

Description

CVE-2025-64130 is a critical reflected cross-site scripting (XSS) vulnerability affecting the Zenitel TCIV-3+ intercom system. This flaw allows remote attackers to execute arbitrary JavaScript code in the context of a victim's browser without requiring authentication or user interaction. The vulnerability has a CVSS score of 9.8, indicating a critical severity with high impact on confidentiality, integrity, and availability. Although no known exploits are currently in the wild, successful exploitation could lead to session hijacking, credential theft, or further network compromise. European organizations using Zenitel TCIV-3+ devices, especially in critical infrastructure or public safety sectors, are at significant risk. Mitigation requires immediate deployment of vendor patches once available and implementing web application firewalls with XSS filtering. Countries with high adoption of Zenitel products and strategic critical infrastructure, such as Germany, France, and the Netherlands, are most likely to be affected. Defenders should prioritize monitoring for suspicious web traffic and restrict access to device management interfaces to trusted networks.

Impact

For European organizations, this vulnerability poses a severe risk, particularly for entities relying on Zenitel TCIV-3+ devices in critical infrastructure sectors such as transportation, public safety, and industrial control systems. Exploitation could compromise sensitive communications, enable unauthorized access to control systems, and facilitate lateral movement within networks. The critical severity indicates potential full compromise of affected systems, risking data breaches, operational disruption, and reputational damage. Given the device’s role in security and communication, attackers could manipulate intercom functions or intercept communications, impacting safety and operational continuity. The vulnerability’s network accessibility and lack of required authentication increase the attack surface, making remote exploitation feasible from outside the organization’s perimeter. This elevates the threat level for European organizations with exposed or poorly segmented Zenitel TCIV-3+ devices.

Summary

CVE-2025-64130 identifies a reflected cross-site scripting (CWE-79) vulnerability in the Zenitel TCIV-3+ intercom system. Reflected XSS occurs when untrusted input is immediately returned in HTTP responses without proper sanitization or encoding, allowing attackers to inject malicious JavaScript code. This vulnerability enables remote attackers to craft malicious URLs or HTTP requests that, when visited by a victim, execute arbitrary scripts in the victim’s browser context. The flaw requires no authentication or user interaction, increasing its exploitation potential. The CVSS 3.1 base score of 9.8 reflects the vulnerability's critical nature, with attack vector being network-based, low attack complexity, no privileges or user interaction needed, and full impact on confidentiality, integrity, and availability. Exploitation could lead to theft of authentication tokens, unauthorized actions on behalf of the user, or pivoting into internal networks. Zenitel TCIV-3+ is commonly deployed in communication and security systems, often integrated into critical infrastructure environments. Although no public exploits are reported yet, the high severity and ease of exploitation warrant immediate attention. The absence of available patches at the time of disclosure emphasizes the need for interim mitigations such as network segmentation and input filtering.

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #1OWASP Top 10 A05:2025: Injection (opens in a new tab)
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Implementation · Architecture and Design
Understand the context in which your data will be used and the encoding that will be expected. This is especially important when transmitting data between different components, or when generating outputs that can contain multiple encodings at the same time, such as web pages or multi-part mail messages.
Architecture and Design · Implementation · Attack Surface Reduction
Understand all the potential areas where untrusted inputs can enter your software: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide…
OWASP Cheat Sheets
Cross Site Scripting Prevention (opens in a new tab)
DOM based XSS Prevention (opens in a new tab)
Injection Prevention (opens in a new tab)
Abuse Case (opens in a new tab)
Deserialization (opens in a new tab)
OWASP ASVS 4.0.3
V5.3.3 (opens in a new tab)
V1.5.1 (opens in a new tab)
Attack patterns
XSS Using MIME Type Mismatch (opens in a new tab)
DOM-Based XSS (opens in a new tab)
Reflected XSS (opens in a new tab)
Stored XSS (opens in a new tab)
Cross-Site Scripting (XSS) (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 3 Dec 2025, 18:58 UTC

WeaknessesCWE-79

Technical details

References

Community reviews

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