CVE-2026-104657
Received
Received - Intake
Integrity Check Bypass in Progress Fiddler Skill
Vulnerability report for CVE-2026-104657, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-11-06
Last updated on: 2026-11-06
Assigner: Progress Software Corporation
Description
Description
Missing integrity verification in the Progress Software Fiddler Download and Setup Skill on Linux, macOS, and Windows which allows an attacker to compromise or influence a release component and execute attacker-controlled code when a user runs the skill. On macOS, the skill stages the package at a predictable path and installs it with administrator privileges, which may allow code execution with root privileges after user approval. A local process may also replace the staged macOS package while the skill waits for approval.
CVSS Scores
EPSS Scores
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| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Progress Software | Fiddler Download & Setup Skill | From 0 (inc) to 8.3.0 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-494 | The product downloads source code or an executable from a remote location and executes the code without sufficiently verifying the origin and integrity of the code. |
| CWE-377 | Creating and using insecure temporary files can leave application and system data vulnerable to attack. |
