CVE-2026-86157

MediumCVSS 5.6/10Last modified Sep 30, 2026

Description

Exposure of privileged IPC functionality in Progress Telerik Fiddler Everywhere before version 8.2.0 allows a local, low-privileged attacker who can modify application launch parameters and persuade a user to start the application to replace the application UI or settings with attacker-controlled content. Successful exploitation could result in disclosure of OAuth authentication tokens, execution of locally accessible programs, or unauthorized modification of application-generated configuration files.

Metrics

CVSS 3.1 5.6/10CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N

Weakness enumeration

CWE-749

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
Progress Software	Progress® Telerik® Fiddler® Everywhere	>= 1.0.0, < 8.2.0

References

https://www.telerik.com/fiddler/fiddler-everywhere/documentation/knowledge-base/kb-security-exposed-dangerous-method-or-function-cve-2026-86157

Timeline

Published: Sep 29, 2026
Last modified: Sep 30, 2026
NVD status: Awaiting Analysis

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