CVE-2026-30903 Vulnerability Analysis & Exploit Details

CVE-2026-30903
Vulnerability Scoring

9.6
/10
Critical Risk

As a catastrophic security flaw, CVE-2026-30903 has severe implications, demanding immediate intervention.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Network
    Vulnerability is exploitable over a network without physical access.
  • Privileges Required: None
    No privileges are required for exploitation.
  • Scope: Changed
    Successful exploitation can impact components beyond the vulnerable component.
  • User Interaction: Required
    User interaction is necessary for successful exploitation.

CVE-2026-30903 Details

Status: Analyzed

Last updated: 🕗 14 May 2026, 20:27 UTC
Originally published on: 🕒 11 Mar 2026, 15:16 UTC

Time between publication and last update: 64 days

CVSS Release: version 3

CVSS3 Source

security@zoom.us

CVSS3 Type

Secondary

CVSS3 Vector

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

CVE-2026-30903 Vulnerability Summary

CVE-2026-30903: External Control of File Name or Path in the Mail feature of Zoom Workplace for Windows before 6.6.0 may allow an unauthenticated user to conduct an escalation of privilege via network access.

Assessing the Risk of CVE-2026-30903

Access Complexity Graph

The exploitability of CVE-2026-30903 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-30903

With low attack complexity and no required privileges, CVE-2026-30903 is an easy target for cybercriminals. Organizations should prioritize immediate mitigation measures to prevent unauthorized access and data breaches.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-30903, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-30903, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: High
    Exploiting CVE-2026-30903 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: High
    CVE-2026-30903 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
  • Availability: High
    CVE-2026-30903 can disrupt system operations, potentially causing complete denial of service (DoS).

CVE-2026-30903 References

External References

CWE Common Weakness Enumeration

CWE-610

CAPEC Common Attack Pattern Enumeration and Classification

  • XML Routing Detour Attacks CAPEC-219 An attacker subverts an intermediate system used to process XML content and forces the intermediate to modify and/or re-route the processing of the content. XML Routing Detour Attacks are Adversary in the Middle type attacks (CAPEC-94). The attacker compromises or inserts an intermediate system in the processing of the XML message. For example, WS-Routing can be used to specify a series of nodes or intermediaries through which content is passed. If any of the intermediate nodes in this route are compromised by an attacker they could be used for a routing detour attack. From the compromised system the attacker is able to route the XML process to other nodes of their choice and modify the responses so that the normal chain of processing is unaware of the interception. This system can forward the message to an outside entity and hide the forwarding and processing from the legitimate processing systems by altering the header information.

Vulnerable Configurations

  • cpe:2.3:a:zoom:workplace_desktop:5.17.5:*:*:*:*:linux:*:*
    cpe:2.3:a:zoom:workplace_desktop:5.17.5:*:*:*:*:linux:*:*
  • cpe:2.3:a:zoom:workplace_desktop:5.17.5:*:*:*:*:macos:*:*
    cpe:2.3:a:zoom:workplace_desktop:5.17.5:*:*:*:*:macos:*:*
  • cpe:2.3:a:zoom:workplace_desktop:5.17.5:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_desktop:5.17.5:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_desktop:5.17.11:*:*:*:*:linux:*:*
    cpe:2.3:a:zoom:workplace_desktop:5.17.11:*:*:*:*:linux:*:*
  • cpe:2.3:a:zoom:workplace_desktop:5.17.11:*:*:*:*:macos:*:*
    cpe:2.3:a:zoom:workplace_desktop:5.17.11:*:*:*:*:macos:*:*
  • cpe:2.3:a:zoom:workplace_desktop:5.17.11:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_desktop:5.17.11:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.0.0:*:*:*:*:linux:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.0.0:*:*:*:*:linux:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.0.0:*:*:*:*:macos:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.0.0:*:*:*:*:macos:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.0.0:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.0.0:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.0.10:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.0.10:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.0.10:*:*:*:*:macos:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.0.10:*:*:*:*:macos:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.0.12:*:*:*:*:linux:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.0.12:*:*:*:*:linux:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.1.0:*:*:*:*:macos:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.1.0:*:*:*:*:macos:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.1.0:*:*:*:*:linux:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.1.0:*:*:*:*:linux:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.1.0:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.1.0:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.1.5:*:*:*:*:macos:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.1.5:*:*:*:*:macos:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.2.0:*:*:*:*:linux:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.2.0:*:*:*:*:linux:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.2.0:*:*:*:*:macos:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.2.0:*:*:*:*:macos:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.2.0:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.2.0:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.2.5:*:*:*:*:linux:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.2.5:*:*:*:*:linux:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.2.5:*:*:*:*:macos:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.2.5:*:*:*:*:macos:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.2.5:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.2.5:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.2.10:*:*:*:*:linux:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.2.10:*:*:*:*:linux:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.2.10:*:*:*:*:macos:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.2.10:*:*:*:*:macos:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.3.0:*:*:*:*:linux:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.3.0:*:*:*:*:linux:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.3.0:*:*:*:*:macos:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.3.0:*:*:*:*:macos:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.3.0:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.3.0:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.3.10:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.3.10:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.3.10:*:*:*:*:linux:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.3.10:*:*:*:*:linux:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.3.10:*:*:*:*:macos:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.3.10:*:*:*:*:macos:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.4.0:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.4.0:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.4.0:*:*:*:*:linux:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.4.0:*:*:*:*:linux:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.4.0:*:*:*:*:macos:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.4.0:*:*:*:*:macos:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.4.10:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.4.10:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.4.13:*:*:*:*:linux:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.4.13:*:*:*:*:linux:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.5.0:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.5.0:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.5.0:*:*:*:*:linux:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.5.0:*:*:*:*:linux:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.5.0:*:*:*:*:macos:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.5.0:*:*:*:*:macos:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.5.5:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.5.5:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.5.10:*:*:*:*:linux:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.5.10:*:*:*:*:linux:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.5.10:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.5.10:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_desktop:6.5.10:*:*:*:*:macos:*:*
    cpe:2.3:a:zoom:workplace_desktop:6.5.10:*:*:*:*:macos:*:*
  • cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.4.0:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.4.0:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.4.10:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.4.10:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.4.11:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.4.11:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.4.12:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.4.12:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.4.13:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.4.13:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.4.14:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.4.14:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.5.10:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.5.10:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.5.11:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.5.11:*:*:*:*:windows:*:*
  • cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.5.12:*:*:*:*:windows:*:*
    cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:6.5.12:*:*:*:*:windows:*:*

Protect Your Infrastructure against CVE-2026-30903: Combat Critical CVE Threats

Stay updated with real-time CVE vulnerabilities and take action to secure your systems. Enhance your cybersecurity posture with the latest threat intelligence and mitigation techniques. Develop the skills necessary to defend against CVEs and secure critical infrastructures. Join the top cybersecurity professionals safeguarding today's infrastructures.

Other 5 Recently Published CVEs Vulnerabilities

  • CVE-2026-8293 – The Really Simple Security WordPress plugin before 9.5.10.1 does not enforce the second-factor challenge in two of its two-factor authentication R...
  • CVE-2026-8206 – The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to privilege escalation via account takeover in ...
  • CVE-2026-3198 – MLflow 3.9.0 with basic-auth (`--app-name basic-auth`) fails to enforce authorization checks for multiple Gateway API 'list' endpoints. Specificall...
  • CVE-2026-10583 – A security vulnerability has been detected in nextlevelbuilder GoClaw up to 3.11.3. Affected by this issue is the function Import of the file inter...
  • CVE-2026-10581 – A flaw has been found in DedeCMS 5.7.88. Affected by this vulnerability is the function base64_decode of the file /plus/download.php?open=1. This m...